Ikelite DS51 User manual

Digital
Substrobe
DDSS5511
#
#4 40 04 44 4. .1 1
N
No ot te e: :Please read all instructions before using this product. 2
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TA AB BL LE EO OF FC CO ON NT TE EN NT TS S
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TA AB BL LE EO OF FC CO ON NT TE EN NT TS S............................................2
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IK KE EL LI IT TE ED DS S5 51 1D DI IG GI IT TA AL LS SU UB BS ST TR RO OB BE E......................3-4
DS51 Specifications ..................................................3
Introduction ..............................................................4
DS51 Substrobe Use ..................................................4
Overview of DS51 Features......................................4
Starting Out ..............................................................4
M
MO OD DE ES SW WI IT TC CH H........................................................5
Off Position ..............................................................5
TTL/auto Exposure Position ....................................5
Manual Exposure Position ......................................5
B
BA AT TT TE ER RY YC CO OM MP PA AR RT TM ME EN NT T....................................6
Opening the Compartment......................................6
Battery Compartment O-ring..................................6
Changing the Batteries ............................................6
Closing the Compartment........................................6
S
ST TR RO OB BE ER RE EA AD DY YL LI IG GH HT T............................................7
Camera Ready Light ................................................7
T
TT TL L/ /A AU UT TO OE EX XP PO OS SU UR RE E............................................8
TTL/Sync Cords..........................................................8
EV Manual Controller #4100.6 ..............................8
C
CO OM MP PA AT TI IB BL LE EC CA AM ME ER RA AS S..........................................9
Traditional Film Cameras ........................................9
Digital Still and dSLR Cameras ................................9
S
ST TR RO OB BE EC CO ON NN NE EC CT TI IO ON N............................................10-11
Connection to Strobe................................................11
C
CA AM ME ER RA AC CO ON NN NE EC CT TI IO ON N..........................................12
Ikelite Compact Digital Camera Housings
(Non-SLR Cameras)..............................................12
Ikelite Digital SLR Camera Housings ......................12
Ikelite SLR Film Camera Housings ..........................12
Nikonos V, RS and Non-Ikelite SLR Film Camera
Housings with Nikonos Connector ....................12
Non-Ikelite Digital Camera Housings with
Nikonos Connector ..............................................12
E
EX XP PO OS SU UR RE EG GU UI ID DE E....................................................13
Exposure Label ..........................................................13
Camera Aperture ......................................................13
D
DI IF FF FU US SE ER R..................................................................14
Using the Diffuser ....................................................14
Diffuser Installation and Removal ..........................14
M
MO OU UN NT TI IN NG GT TH HE ES ST TR RO OB BE E......................................15
Ikelite Arm Systems..................................................15
L
LI IT TE EB BR RA AC CK KE ET T# #4 40 07 73 3..............................................15
S
ST TR RO OB BE EA AR RM M# #4 40 07 75 5. .1 1..............................................16
Mount Strobe to Strobe Arm ..................................16
Mount Knuckle Arm to Housing ............................16
Aim the Strobe ..........................................................16
B
BA AL LL L- -S SO OC CK KE ET TA AR RM M# #4 40 08 86 6. .6 61 1................................17
Connect Strobe to Strobe Mount............................17
Mount Arm to Housing............................................17
Use Ball Clamps to Mount Strobe to Arm
and Aim Strobe ....................................................17
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IK KE EL LI IT TE EB BA AL LL L- -S SO OC CK KE ET TC CO OM MP PO ON NE EN NT TS S................18-19
R
RE EC CO OM MM ME EN ND DA AT TI IO ON NS S............................................20
Visual Inspections ....................................................20
Insurance ..................................................................20
Tips ............................................................................20
Lubricant....................................................................20
M
MA AI IN NT TE EN NA AN NC CE E........................................................21
Routine Cleaning ......................................................21
Long Term Storage ..................................................21
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BA AT TT TE ER RY YC CO OM MP PA AR RT TM ME EN NT TF FL LO OO OD DI IN NG G................22
T
TR RO OU UB BL LE ES SH HO OO OT TI IN NG G..............................................23
Strobe Will Not Fire ................................................23
W
WA AR RR RA AN NT TY YS SE ER RV VI IC CE E..............................................24
Ikelite Limited Warranty ........................................24
Returning Products for Service ..............................24

3
I
IK KE EL LI IT TE ED DS S5 51 1D DI IG GI IT TA AL LS SU UB BS ST TR RO OB BE E
D
DS S5 51 1S SP PE EC CI IF FI IC CA AT TI IO ON NS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
W
We ei ig gh ht t: :......................................................0.6kg (1.3 lbs.) with batteries
E
En ne er rg gy yR Ra at ti in ng g: :..........................................50 watt-sec.
C
Co ov ve er ra ag ge eA An ng gl le e: :........................................70° (80° with diffuser)
W
Wi id de es st tL Le en ns s: ..............................................28mm SLR or 28mm Nikonos
20mm Nikonos with diffuser
G
Gu ui id de eN Nu um mb be er r(ISO 100) feet: ................56 surface, 28 underwater
G
Gu ui id de eN Nu um mb be er r(ISO 100) meters: ............17 surface, 9 underwater
F
Fi ir ri in ng gM Mo od de es s: :............................................TTL/auto and manual exposure
Slave featuring 10-manual power settings
using optional EV Manual Controller #4100.6
C
Co ol lo or rT Te em mp pe er ra at tu ur re e: :..................................5700°K
P
Po ow we er rS So ou ur rc ce e: :............................................4 AA-cell alkaline, NiCad, or NiMH
F
Fl la as sh he es s: :......................................................200 full power
R
Re ec cy yc cl le eT Ti im me e: :............................................3.5 seconds (full power)
D
De ep pt th hR Ra at ti in ng g: :............................................90m (300 feet)
C
Ca au ut ti io on n: :
• The DS51’s bulkhead connector is not waterproof and must be capped when not
connected to a cord or sensor. Using a DS51 underwater with the bulkhead connector
uncapped or unconnected will cause the strobe to flood. Return the DS51 to Ikelite for
inspection.
• The strobe itself is factory sealed; d
do on no ot tdisassemble. Disassembly will void your
Ikelite DS51’s limited warranty.
• D
Do on no ot tcontinuously fire the strobe more than 15 time in rapid succession. If this
does happen, allow the strobe to cool down for at least 10 minutes.
Strobe Mount
Bulkhead
Connector
(waterproof
cap removed)
51
ikelite
SUBSTROBE
DS
Bulkhead Cap
Battery Door
Mode
Switch
Ready
Light
Strobe Mount
Waterproof
Bulkhead Cap
Knob
4
I
IK KE EL LI IT TE ED DS S5 51 1S SU UB BS ST TR RO OB BE E
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IN NT TR RO OD DU UC CT TI IO ON N_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Thank you for purchasing an Ikelite Substrobe. Ikelite brings 40 years of underwater
photographic and lighting experience to the strobe market. Ikelite Substrobes are
designed and built in the USA by Ikelite to suit both the professional and the amateur
photographer.
D
DS S5 51 1S SU UB BS ST TR RO OB BE EU US SE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
The purpose of a strobe is to illuminate the subject and assist the camera in taking
vivid pictures. The Ikelite DS51 strobe is equally suited for general and wide-angle
photography, covering up to 80° with a diffuser. The compact size of the DS51 makes it
ideal for macro photography while its 5700°K-color temperature helps bring out the true
colors of the underwater world.
The Ikelite DS51 strobe is preflash compatible and operates with traditional film
cameras, dSLR cameras, and digital still cameras. TTL/auto and manual exposure firing
modes are featured. Add the optional Ikelite EV Manual Controller #4100.6 for 10
manual power settings. The DS51’s electronics are safely sealed away from the battery
compartment.
Aim the DS51 strobe and illuminate your subject’s colors with the optional Mini-C Lite
and Lite Bracket #4073. The bracket secures beneath the strobe, allowing the Mini-C Lite
to be used as both an aiming light and as a night diving light.
O
OV VE ER RV VI IE EW WO OF FD DS S5 51 1F FE EA AT TU UR RE ES S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
• Mode switch features TTL/auto and manual exposure settings.
• Battery compartment accommodates four AA batteries: alkaline, NiCad, or NiMH.
• Ready light indicates when strobe has recycled.
• Female Ikelite bulkhead connector accepts different camera sync cords and the
EV Manual Controller #4100.6.
• Exposure guide label references recommended exposure settings.
• Diffuser provides softer lighting, wider coverage angle and reduces strobe output
by one f-stop.
• Strobe mount connects to most Ikelite arm systems.
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ST TA AR RT TI IN NG GO OU UT T_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Before using the Ikelite DS51 Substrobe, please read this owner’s manual thoroughly
and retain it for future reference. Ikelite recommends becoming familiar with the
features and functions of the Ikelite DS51 Substrobe above water before trying the
camera and strobe in the water. And, if you have not yet done so, it is suggested that
you read your camera’s owner’s manual as well.

6
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BA AT TT TE ER RY YC CO OM MP PA AR RT TM ME EN NT T
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OP PE EN NI IN NG GT TH HE EC CO OM MP PA AR RT TM ME EN NT T_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Always turn the substrobe to OFF before opening the battery door located at the back
of the strobe.
To access the battery compartment, rotate the knob counter-clockwise several times
and gently pull the door off. Tilt the rear portion of the strobe down while removing
the battery door to eliminate the possibility of water droplets falling into the battery
compartment after a dive. N
No ot te e: :D Do on no ot tremove the knob from the battery door.
C
Ca au ut ti io on n: :The battery compartment is sealed separately from the main electronics.
D
Do on no ot tdisassemble the strobe. Disassembly will void your Ikelite limited warranty.
B
BA AT TT TE ER RY YC CO OM MP PA AR RT TM ME EN NT TO O- -R RI IN NG G_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Be aware of the position of the o-ring around the perimeter of the battery door.
N
No ot te e: :Keep the o-ring and sealing surfaces clean.
Lightly lubricate the exposed portion of the o-ring with the Ikelite silicone lubricant
provided. Use only enough lubricant to cover the o-ring; wipe off any excess with a
clean cloth. (See “Lubricant” on page 20.)
C
CH HA AN NG GI IN NG GT TH HE EB BA AT TT TE ER RI IE ES S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Install four AA-cell batteries: alkaline, NiCad, or NiMH. Refer to the “+” and “ – “
markings in the battery compartment to help properly install the batteries. If the
batteries are installed incorrectly, it may damage the strobe’s electronics.
Always carry spare batteries; weak batteries cause many camera and strobe
problems. It’s time to replace the batteries when, after the DS51 has flashed, the ready
light remains dark for 15 seconds or longer. (See “Strobe Ready Light,” page 7.)
N
No ot te e: :It is possible to buy bad “new” batteries; check the voltage output with
a meter.
C
CL LO OS SI IN NG GT TH HE EC CO OM MP PA AR RT TM ME EN NT T_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Again, check that the o-ring and sealing surfaces are clean and that the o-ring is
lightly lubricated. Make sure the o-ring is back in its original position.
Replace the battery door. Make sure the door fits into the recess around the battery
compartment. Rotate the knob clockwise several times and firmly hand-tighten to assure
the proper o-ring seal; otherwise, the battery compartment may leak. C
Ca au ut ti io on n: :D Do on no ot t
use a tool when tightening. It may damage the battery door.
M
MO OD DE ES SW WI IT TC CH H
The DS51 Substrobe’s mode switch has eight different positions: OFF, TTL/auto exposure setting,
and six manual exposure settings.
O
OF FF FP PO OS SI IT TI IO ON N_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
(Fig.1) Shows the mode switch in the OFF position. The white indicator on the knob
aligns with OFF. Always turn the substrobe to OFF before connecting or disconnecting a
sync cord or opening the battery compartment.
T
TT TL L/ /A AU UT TO OE EX XP PO OS SU UR RE EP PO OS SI IT TI IO ON N_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
(Fig.2) Shows the mode switch in the TTL (Thru-the-Lens) / auto exposure position.
From the OFF position, rotate the switch clockwise to access the TTL/auto exposure
setting; the white indicator on the knob aligns with TTL. When taking pictures with the
mode switch in this position, the camera automatically signals the strobe to turn off
when the exposure is correct.
N
No ot te e: :
• When the DS51 is connected directly to the camera, the camera must feature
compatible TTL/auto exposure to utilize this mode. (See “TTL/Auto Exposure,” page 8
and “Compatible Cameras,” page 9.)
• The TTL/auto firing mode must be selected when connecting the EV Manual
Controller #4100.6.
M
MA AN NU UA AL LE EX XP PO OS SU UR RE EP PO OS SI IT TI IO ON N_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
(Fig.3) Shows the mode switch in the manual exposure mode with the DS51
Substrobe turned to the F (full power) position. Rotate the mode switch clockwise to
access the different power settings. Each power setting clockwise from F reduces the light
output of the DS51 Substrobe in one-half f-stop increments. When shooting in the manual
mode, it is suggested that you start the strobe at full power and adjust the camera’s
aperture based on the strobe-to-subject distance. (See “Exposure Guide,” page 13.)
If the subject in the photo is underexposed (dark) you must move closer to the
subject. If the subject is overexposed (light), then you can rotate the mode switch
clockwise to reduce the light output of the strobe until the desired exposure is obtained.
The DS51 provides five reductions in power in one-half f-stop increments from the full
power setting. (Fig.4), for example, shows the mode switch set to -1 and 1/2 f-stops.
(Fig.1) (Fig.2)
(Fig.3) (Fig.4)
Battery Door
Mode
Switch
Ready
Light
Strobe Mount
Waterproof
Bulkhead Cap
Knob
5

7
S
ST TR RO OB BE ER RE EA AD DY YL LI IG GH HT T
The Ikelite DS51 Substrobe features a ready light at the rear of the strobe that glows
when the DS51 has recycled and is ready to fire its flash again. This recycling time should
not exceed 15 seconds. If the glow disappears for longer than 15 seconds between flashes,
it may be time for new batteries. (See “Changing the Batteries” on page 6.)
N
No ot te e: :The strobe ready light does not indicate correct or incorrect exposure.
The strobe ready light works in special ways with certain cameras and optional
equipment, see “Camera Ready Light” below.
C
CA AM ME ER RA AR RE EA AD DY YL LI IG GH HT T_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
T
Tr ri ig gg ge er re ed dv vi ia aS Sy yn nc cC Co or rd d
When using a TTL/auto exposure camera (film or dSLR digital) in an Ikelite TTL-
compatible housing connected to the DS51 strobe by sync cord, the flash ready light in
the camera viewfinder and the DS51 ready light will both glow when the Substrobe has
recycled and is ready to fire.
If the Ikelite housing does not feature TTL compatible circuitry, then the ready light
in the camera viewfinder would not glow when the strobe has recycled.
T
Tr ri ig gg ge er re ed dv vi ia aS Sl la av ve eS Se en ns so or r
When using the DS51 strobe with the optional DS Sensor or EV Manual Controller
(without optional sync cord), the strobe is not electronically connected to the camera.
Therefore, the ready light in the viewfinder of the camera indicates when the on-camera
flash has recycled. Examine both the camera and DS51 ready lights to make sure both
flashes have fully recycled before taking the next picture.
Ready
Light
8
T
TT TL L/ /A AU UT TO OE EX XP PO OS SU UR RE E
Most newer cameras and strobes feature TTL/auto exposure, which automatically com-
pensates for aperture, distance, extension tubes, and filters. Because there’s such a wide
range of apertures and subject distances, photographers who want to easily balance
lighting and control close-up photography should select the TTL/auto exposure mode.
When the strobe fires, the camera reads the light and automatically signals the
strobe to turn off when the exposure is correct. TTL/auto exposure compatible
electronics must be featured on both the strobe and camera in order for this to occur.
The appropriate TTL sync cord or optional Ikelite sensor is required to relay the TTL/auto
exposure signal from the camera to the strobe.
Please review the “Compatible Cameras” section, on page 9 for additional information.
T
TT TL LS SY YN NC CC CO OR RD DS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Ikelite offers interchangeable sync cords so that different camera systems can be
connected to the DS51 strobe. A TTL sync cord is required to send the TTL/auto exposure
signal from the camera to the strobe. See also “Strobe Connection,” pages 10-11, and
“Camera Connection,” page 12.
E
EV VM MA AN NU UA AL LC CO ON NT TR RO OL LL LE ER R# #4 41 10 00 0. .6 6_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
For maximum control over flash exposure, the Ikelite Exposure Value (EV)
Controller can be used with the DS51 strobe. Certain things must be done when using the
two products together, since both the DS51 and the EV Manual Controller have multiple
manual power settings.
N
No ot te e: :Only one device’s range of settings can be used at a time
When the DS51’s mode switch is set to any of its six manual power settings, the
power settings on the EV Manual Controller are ignored.
When the DS51’s mode switch is set to TTL, the power settings on the DS51 are
ignored and the ten manual power settings on the EV Manual Controller become active.

9
C
CO OM MP PA AT TI IB BL LE EC CA AM ME ER RA AS S
The Ikelite DS51 strobe is preflash compatible and provides optimum performance with
traditional film cameras, digital still cameras, and dSLR cameras in related Ikelite housings.
The appropriate sync cord or sensor must be connected to trigger the strobe.
The TTL/auto exposure mode on the Ikelite DS51 strobe is compatible with the
following TTL/auto exposure camera systems.
T
TR RA AD DI IT TI IO ON NA AL LF FI IL LM MC CA AM ME ER RA AS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
The TTL/auto exposure mode on the Ikelite DS51 strobe is compatible with the
following TTL film camera systems. The camera reads the light passing thru-the-lens
and automatically signals the strobe to turn off when the exposure is correct.
• SLR 35mm camera in the Ikelite SLR-AF Housing or another brand SLR housing
that features Nikon-based TTL electronics.
• Nikonos V camera
• Nikonos RS camera
D
DI IG GI IT TA AL LS ST TI IL LL LA AN ND Dd dS SL LR RC CA AM ME ER RA AS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
T
Tr ri ig gg ge er re ed dv vi ia aS Sy yn nc cC Co or rd d
Many Ikelite digital still housings and Ikelite dSLR housings feature TTL compatible
circuitry connected with the Ikelite female bulkhead connector. Connect the Ikelite sync
cord from the Ikelite housing to the DS51 strobe for TTL auto exposure.
Some other Ikelite housing models feature the Ikelite bulkhead connector but offer
only manual exposure because TTL conversion circuitry for that specific camera model
is unavailable or not yet developed.
T
Tr ri ig gg ge er re ed dv vi ia aS Sl la av ve eS Se en ns so or r
Some digital still cameras feature a small built-in flash without a means to connect
a sync cord for an external strobe. Most of these cameras fire their built-in flash more
than once while taking a flash picture. This happens so fast it is difficult to see, but the
preflash helps the camera determine focus, exposure, and color balance. After the
preflash, the camera's built-in flash then fires to illuminate the subject and the picture
is taken. For the external strobe to provide proper exposure, it must be preflash
compatible to duplicate the preflash sequence. The Ikelite DS51 strobe is a preflash
compatible strobe.
Because some of the newest digital still cameras feature a very quick preflash
sequence, the Ikelite EV Manual Controller #4100.6 is the recommended option for
using the DS51.
The optional Ikelite EV Manual Controller #4100.6 connects to the DS51 strobe and
provides 10-manual power settings in half-stop increments. The EV Manual Controller
can be triggered using the built-in slave sensor or by connecting an optional sync cord
and provides maximum manual control of the exposure process.
10
Strobe Mount
Bulkhead
Connector
(waterproof
cap removed)
51
ikelite
SUBSTROBE
DS
Bulkhead Cap
Retaining
Ring
Stem O-ring
Ikelite
Index Groove
Stem O-ring
Retaining
Ring
Nikonos
S
ST TR RO OB BE EC CO ON NN NE EC CT TI IO ON N
Ikelite Cord

11
S
ST TR RO OB BE EC CO ON NN NE EC CT TI IO ON Nc
co on nt t. .
The female Ikelite bulkhead connector permits different Ikelite sync cords or the Ikelite
EV manual controller sensor to be connected to the strobe. The sync cord or sensor relays
a signal from the camera to the substrobe that tells the DS51 when to flash.
The removable waterproof bulkhead cap seals the bulkhead connector when neither
a cord nor a sensor is connected to the DS51. The strobe’s bulkhead connector must be
sealed to remain waterproof.
C
Ca au ut ti io on n: :
•D
Do on no ot tuse a TTL cord with a non-TTL substrobe; you will damage the camera.
•D
Do on no ot tleave the sync cord or sensor connected to the camera or strobe
for prolonged periods as electrolysis could occur and make removal of the
equipment impossible.
•D
Do on no ot tdisconnect the sync cord or sensor from the camera or strobe when
underwater or when wet. These items are not waterproof when disconnected.
C
CO ON NN NE EC CT TI IO ON NT TO OS ST TR RO OB BE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
To connect either a sync cord or sensor to the DS51 Substrobe, follow these instructions:
1. Turn the substrobe to OFF and make sure all components are dry. Clean and
lightly lubricate the stem o-ring and the bulkhead connector threads.
Check the o-ring for nicks or cuts.
2. Note the positioning of the receptacles and pins on the end of the cord. Properly
align the end of the cord and insert it into the strobe bulkhead connector. N
No ot te e: :
When using the #4103.51 cord, which connects an Ikelite housing to an Ikelite
Substrobe, both cord ends are identical; either end can be connected to the strobe.
3. C
Ca au ut ti io on n: :The connector threads are very fine; do not cross thread. If it is difficult
to turn the knurled retaining ring on the cord or sensor, you are cross-threading.
This can make removal of the strobe or sensor impossible.
Hand-tighten the knurled retaining ring on the cord or sensor. Push the end of
the cord further into the bulkhead connector and continue to tighten the knurled
retaining ring. C
Ca au ut ti io on n: :D Do on no ot tuse a tool when tightening. It could damage the
cord or strobe.
12
C
CA AM ME ER RA AC CO ON NN NE EC CT TI IO ON N
N
No ot te e: :All of the directions regarding camera connection assume you have already
attached your DS51 to a sync cord or EV Manual Controller. (See “Strobe Connection,”
pages 10-11.)
I
IK KE EL LI IT TE EC CO OM MP PA AC CT TD DI IG GI IT TA AL LC CA AM ME ER RA AH HO OU US SI IN NG GS S( (N NO ON N- -S SL LR RC CA AM ME ER RA AS S) )_ __ __ __ __ __ __ __ __ __ __ __ __ _
N
No ot te e: :In order to connect an Ikelite compact digital camera housing to an Ikelite
DS51 Substrobe, the camera being housed must have a hot shoe.
There are three categories of compact digital camera housings:
1. Housing with no sync cord connector.
This housing requires you to use the EV Manual Controller in slave mode.
You can then either use the DS51 in manual exposure mode or switch the DS51
to TTL/auto exposure mode and use the power settings on the EV Manual
Controller instead.
2. Housing with sync cord connector and conversion circuitry.
This housing requires you to use a sync cord. The DS51 can then be used in
either the TTL/auto exposure mode or the manual exposure mode.
3. Housing with sync cord connector but without conversion circuitry.
This housing requires you to use a sync cord. The DS51 is then used in the
manual exposure mode.
I
IK KE EL LI IT TE ED DI IG GI IT TA AL LS SL LR RC CA AM ME ER RA AH HO OU US SI IN NG GS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
• All of these housings have a sync cord connector.
• All of these housings (except the Nikon D100) have conversion circuitry, which
allow Ikelite strobes to work with the camera’s TTL circuitry. See your
housing Instructions for more information on conversion circuitry.
• Some of these housings have Exposure Compensation built into
the housing. This allows for positive or negative adjustment of the
TTL/auto exposure. Or you can switch to manual exposure and adjust
the strobe output.
IIKKEELLIITTEESSLLRRFFIILLMMCCAAMMEERRAAHHOOUUSSIINNGGSS________________________________________________________________________
Connect with the Ikelite sync cord. Use the DS51 in TTL/auto or manual
exposure mode.
NNIIKKOONNOOSSVV,,RRSS,,AANNDDNNOONN--IIKKEELLIITTEESSLLRRFFIILLMMCCAAMMEERRAAHHOOUUSSIINNGGSSWWIITTHHNNIIKKOONNOOSSCCOONNNNEECCTTOORR
Connect with the Nikonos sync cord. Use the DS51 in TTL/auto or manual exposure mode.
N
No ot te e: :TTL/auto exposure availability will depend on the camera model being housed.
NNOONN--IIKKEELLIITTEEDDIIGGIITTAALLCCAAMMEERRAAHHOOUUSSIINNGGSSWWIITTHHNNIIKKOONNOOSSCCOONNNNEECCTTOORR________
Connect with the Nikonos sync cord. Use the DS51 in manual
exposure mode.
N
No ot te e: :These housings do not usually have conversion circuitry.
If third party conversion circuitry is present in the housing, refer
to the third party product’s instructions for help in using the DS51
with this setup.
Retaining
Ring
Stem O-ring
Ikelite
Index Groove
Stem O-ring
Retaining
Ring
Nikonos
Retaining
Ring
Stem O-ring
Ikelite
Index Groove
Stem O-ring
Retaining
Ring
Nikonos

14
D
DI IF FF FU US SE ER R
U
US SI IN NG GT TH HE ED DI IF FF FU US SE ER R_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
The white diffuser can be secured to the front of the DS51 strobe when softer lighting
or a coverage angle of up to 80° is desired.
The diffuser reduces the DS51’s light intensity by one full f-stop. When the diffuser
is secured to the strobe, refer to the exposure guide information on page 13 and increase
the number by one.
For the TTL/auto mode example with a film ISO rating of 100, if you set your camera
to f-8 without the diffuser, you can shoot subjects up to 1.0m (3.5’) away, as stated on
page 13. If you add the diffuser to the strobe with the camera set at f-8 and using ISO
100 film, you must reference one number greater than f-8 in the chart. In this case, that
number is f-11, meaning you can shoot subjects up to 0.6m (2’) away.
D
DI IF FF FU US SE ER RI IN NS ST TA AL LL LA AT TI IO ON NA AN ND DR RE EM MO OV VA AL L_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
1. The white diffuser features two protruding tabs for use in installation and
removal. The tabs on the diffuser should be positioned away from the strobe.
2. Place the diffuser over the front of the strobe. Spread the two tabs apart, insert
the diffuser into the recessed front, and then rotate the diffuser until it locks
into position.
3. To remove the diffuser, bend one tab out towards the edge while lifting
simultaneously.
A lanyard can be attached to the diffuser by threading it through the two circular
openings near its edge.
Push and
Lift to Remove
Tab
Holes for
Lanyard
Tab
13
..........
..........
..........
..........
..........
........
.....
..........
SUBSTROBE DS51
FILM ISO RATING
DISTANCE
M
M
M
M
M
M
M
M
0.3 0.6 1.2 2.5 5m
124816ft
25 50 100 200 400 800
25 50 100 200 400 800
2.8 4 5.6
2.8 4 5.6 8
2.8 4 5.6 8 11
2.8 4 5.6 8 11 16
4 5.6 8 11 16 22
5.6 8 11 16 22
8 11 16 22
11 16 22
Output is 1/2 stop greater than shown in chart
E
EX XP PO OS SU UR RE EG GU UI ID DE E
Due to the loss of color when light passes through water, move closer to your subject
to photograph thru as little water as possible.
N
No ot te e: :The maximum recommended lighting distance underwater with any brand
strobe is 1.8m (6'). Shooting a subject at a greater distance underwater will usually
create bluish, silhouette type images.
E
EX XP PO OS SU UR RE EL LA AB BE EL L_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
The exposure label information is primarily intended for use with traditional film
cameras since digital still cameras may require less light for proper exposure. The
exposure label is compatible with TTL/auto and manual modes and references the
DS51 strobe output without the diffuser installed.
T
TT TL L/ /a au ut to oM Mo od de ee ex xa am mp pl le e:
If you select f-8 with 100 ISO film, you can shoot subjects up to 1.0m (3.5') away.
If you select f-4 with 100 ISO film, you can shoot subjects up to 2.1m (7') away;
however, Ikelite recommends shooting subjects no farther than 1.8m (6') away
underwater.
M
Ma an nu ua al lM Mo od de ee ex xa am mp pl le e:
If you select f-8 with 100 ISO film, the subject should be 1.0m (3.5') away for proper
exposure as indicated by the letter M
M.
C
CA AM ME ER RA AA AP PE ER RT TU UR RE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
For balanced lighting between your subject and the background, meter the
available light and set the camera aperture accordingly. Using a narrower aperture
darkens the background. A wider aperture lightens the background and may over-expose
the photograph.

15
M
MO OU UN NT TI IN NG GT TH HE ES ST TR RO OB BE E
I
IK KE EL LI IT TE EA AR RM MS SY YS ST TE EM MS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Ikelite offers several arm choices compatible with the DS51. The arm is not supplied with
the strobe unless purchased as part of a complete package.
C
Ca au ut ti io on n: :Ikelite arm systems are designed for underwater use. Be careful when
transporting the system above water since some camera trays and arm adjustments may
be unable to support the weight of the strobe(s) above water.
The DS51 will feature either a paddle-type or ball-type mount on the underside of
the strobe body. Please read “Strobe Arm #4075.1” on page 16 and “Ball-Socket Arm
#4086.61” on page 17 for additional information.
L
LI IT TE EB BR RA AC CK KE ET T# #4 40 07 73 3
The optional Lite Bracket secures the Ikelite Mini-C Lite underneath the DS51 strobe
for use as an aiming light and night diving light.
The Lite Bracket is placed between the strobe body and the original strobe mount.
Using a Phillips Head screwdriver, remove the strobe mount from underneath the strobe
and secure the Lite Bracket in its place. Then, using the extra screw provided with the
Lite Bracket, secure the strobe mount under the bracket.
51
ikelite
SUBSTROBE
DS
Lite Bracket
for Mini C-Lite
Strobe
Mount
Rubber
Gasket
Ikelite
Substrobe
Bolt
Screw
Screw
S
ST TR RO OB BE EA AR RM M# #4 40 07 75 5. .1 1
This versatile Ikelite strobe arm offers multiple aiming positions. With a second joint
(#4076.2), an additional strobe arm can be used.
M
MO OU UN NT TS ST TR RO OB BE ET TO OS ST TR RO OB BE EA AR RM M_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
The paddle-type strobe mount featured on the
DS51 secures to most Ikelite arm systems, including
the #4075.1 Strobe Arm; it allows the strobe to
tilt forward and backward. N
No ot te e: :The rubber gaskets
on the strobe mount and strobe arm create friction
against the arm and should not be lubricated.
M
MO OU UN NT TK KN NU UC CK KL LE EA AR RM MT TO OH HO OU US SI IN NG G_ __ __ __ __ __ __ __ __ __ __ __ _
The stem protruding at the base of the Knuckle arm
snaps into the release handle on the Ikelite housing.
To insert the stem into the release handle, depress
the handle’s release button and slide the stem fully
into the opening on top of the handle. Release the
button and it should spring back to its original
position, locking the arm in place.
The stem also provides a convenient location for
securing the optional DS Slave Sensor or EV Manual
Controller.
A
AI IM MT TH HE ES ST TR RO OB BE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Loosen the large, four-pointed wing nut on the
knuckle and insert the strobe arm through the
opening on the opposite side. The strobe arm can be
rotated 360°, pivoted sideways, and pushed higher
or lower before retightening the wing nut.
Once you are satisfied with the strobe’s
position, turn the knuckle’s wing nut clockwise
until the opening clamps down on the strobe
arm, securing it in place.
Strobe
Mount
Rubber
Gasket
Bolt
Ikelite
Substrobe
51
ikelite
Screw
SUBSTROBE
DS
Bulkhead
Cap
16
Strobe Mount
Wing Nut Rubber
Gaskets
Ikelite
Substrobe
Release Button
Stem
Strobe Arm
Release Handle
Knuckle
Knuckle
Arm
Wing Nut

17
B
BA AL LL L- -S SO OC CK KE ET TA AR RM M# #4 40 08 86 6. .6 61 1
The articulating Ikelite Ball-Socket Arm secures the DS51 strobe to the release handles
on all Ikelite digital still housings and SLR housings. The versatility of the arm’s dual ball
sockets is especially helpful during macro photography. They adjust independently and
allow for a multitude of strobe mounting positions.
The Ball-Socket Arm #4086.61 utilizes 2.5cm (1”) diameter balls. Optional components
to modify the arm are available. (See “Ikelite Ball-Socket Components,” pages 18-19.)
C
CO ON NN NE EC CT TS ST TR RO OB BE ET TO OS ST TR RO OB BE EM MO OU UN NT T_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
A ball-type strobe mount is included with
the Ball-Socket Arm #4086.61. It is featured
under the ball clamp at the top of the arm.
There may be a small rubber pad secured to
the top of the ball mount; remove this pad
when using a DS51 with this kind of arm.
The next step then depends on whether or not you have another
kind of strobe mount currently attached to your DS51. If there is no other
mount, use the ball-type mount provided. There are screw openings at each
end of the ball-type mount. Select the side that has an opening closest to the
flat top of the mount. Slide that side of the ball-type mount under the DS51
until it aligns with the small screw opening located under the front part of
the strobe. Then, using a Phillips Head Screwdriver with the screw provided,
tighten the screw until the mount rests secure under the DS51.
If a paddle-type mount is already secured beneath the DS51, simply
remove the screw with a Phillips Head Screwdriver and follow the above
instructions to replace it with the ball-type mount featured on the
Ball-Socket Arm #4086.61.
M
MO OU UN NT TA AR RM MT TO OH HO OU US SI IN NG G_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
The stem protruding at the base of the arm snaps into the release handle on the Ikelite
housing. To insert the stem into the release handle, depress the handle’s release button and
slide the stem fully into the opening atop the handle. Release the button and it should
spring back to its original position, locking the arm in place. The stem also provides a
convenient location for securing the optional DS Slave Sensor or EV Manual Controller.
U
US SE EB BA AL LL LC CL LA AM MP PS ST TO OM MO OU UN NT TS ST TR RO OB BE ET TO OA AR RM MA AN ND DA AI IM MS ST TR RO OB BE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Turn the wing nuts of the arm counter-clockwise to loosen the ball clamps. Position
the ball of the strobe mount in the ball socket of the loosened ball clamp at the top of
the arm. Once you are satisfied with the strobe’s position, turn the wing nut clockwise
to retighten until the DS51 rests securely. Loosen and retighten the wing nuts
accordingly on each ball clamp to adjust the overall position of the arm. Each section
of the ball-socket arm can rotate up to 360 degrees.
The cap in the center of each wing nut limits their movements so that the nut can
not be turned all the way off. This insures that the arm cannot be accidentally
disassembled. If desired, the center cap can be adjusted to remove this safety feature.
Wing Nut
Ball Clamp
Strobe
Mount
Release Button
Stem
Release Handle
Ikelite
Substrobe
Ball Socket
Ball
Clamp
Wing
Nut
Ball
Socket
18
I
IK KE EL LI IT TE EB BA AL LL L- -S SO OC CK KE ET TC CO OM MP PO ON NE EN NT TS S
B
BA AL LL L- -S SO OC CK KE ET TC CO OM MP PO ON NE EN NT TS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
This page illustrates the range of
interchangeable components available
to add onto the Ikelite Ball-Socket
Arm #4086.61.
N
No ot te e: :Tray mounts are offered for
Ikelite, Universal, and Dovetail systems.
A variety of Ikelite arm component utilizing 2.5cm (1”) or 3.2cm (1.3”) diameter balls
are available and can be combined with the ball-socket systems of TLC, Nikon, and
Ultralight that use 2.5cm (1”) balls. (See “Ikelite Ball-Socket Components” on page 19
for more information.)
A B C D E F G H I J K L

20
R
RE EC CO OM MM ME EN ND DA AT TI IO ON NS S
V
VI IS SU UA AL LI IN NS SP PE EC CT TI IO ON NS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Visual inspections are important. Take the time to examine the entire assembled
setup (strobe, camera housing, arms, etc.) above water. An improper seal or loose
connection can cause a lot of damage. Always check for leaks once you place the
equipment in the water.
I
IN NS SU UR RA AN NC CE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
It is recommended that you add an a
al ll l- -r ri is sk kf fl lo oa at te er rto your homeowner’s and/or
renter’s insurance policy to cover your equipment against loss or damage. While the
Ikelite DS51 Substrobe has a limited warranty against manufacturing defects, it does
not cover customer neglect.
T
TI IP PS S_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
• Photograph through as little water as possible; move in close. Maximum
recommended shooting distance underwater is 1.8m (6’).
• Use the diffuser for softer lighting or a coverage angle between 70° and 80°.
• Measure the light with a meter and set the camera aperture accordingly.
Remember: a narrower aperture darkens the background; a wider aperture
lightens it. TTL/auto exposure controls on some cameras can be set to adjust
the aperture automatically.
• More natural looking photos can be achieved through the addition of a second
external strobe. The Ikelite EV Manual Controller #4100.6 works well with a
second strobe when you plan on using manual exposure.
• Always carry spare batteries. Weak batteries are the cause of many strobe and
camera problems; check the voltage with a meter. N
No ot te e: :it’s possible to buy bad
“new” batteries.
•D
Do on no ot tfire the strobe more than 15 times in rapid succession. If this does happen,
allow the DS51 to cool off for at least 10 minutes before resuming photography.
L
LU UB BR RI IC CA AN NT T_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
• Use only Ikelite brand silicone lubricant with Ikelite brand o-rings; other brand
lubricants can cause the Ikelite o-rings to swell in size.
•D
Do on no ot tuse spray lubricant; it can crack the plastic parts of the strobe.
• Ikelite brand silicone lubricant is provided for the sync cord stem o-ring and the
bulkhead connector threads. Use only enough lubricant to lightly cover the area
being applied; wipe off any excess with a clean cloth.
• Lubricant only reduces friction; it is not a sealant.
19
I
IK KE EL LI IT TE EB BA AL LL L- -S SO OC CK KE ET TC CO OM MP PO ON NE EN NT TS Sc
co on nt t. .
[
[A A] ]QUICK RELEASE HANDLE WITH STROBE MOUNT
#9578.07 18cm (7"), #9578.09 23cm (9"), #9578.15 38cm (15") handle
[
[B B] ]QUICK RELEASE HANDLE WITH 3.2cm (1.3") BALL
#9581.07 18cm (7"), #9581.09 23cm (9"), #9581.15 38cm (15") handle
[
[C C] ]BALL WITH STEM
#9571.3: 2.5cm (1") ball with extended stem (snaps into release handle).
#9577.3: 3.2cm (1.3") ball with short stem (snaps into release handle).
#9577.33: 3.2cm (1.3") ball with extended stem (snaps into release handle).
[
[D D] ]BALL 3.2cm (1.25") WITH STROBE MOUNT
#9579.04 10cm (4"), #9579.06 15cm (6"), #9579.12 30cm (12") arm
[
[E E] ]BALL-TO-BALL ARM EXTENSION
#0466.42: Both balls 2.5cm (1"), arm length 10cm (4")
#0466.51: Ball-to-ball adapter combines different diameter ball arms.
One 2.5cm (1") ball connected to one 3.2cm (1.3") ball, length 13cm (5").
#0466.62: Both balls 2.5cm (1"), arm length 15cm (6")
#0466.92: Both balls 2.5cm (1"), arm length 22cm (9")
#9580.04: Both balls 3.2cm (1.3"), arm length 10cm (4")
#9580.06: Both balls 3.2cm (1.3"), arm length 15cm (6")
#9580.12: Both balls 3.2cm (1.3"), arm length 30cm (12")
[
[F F] ]BALL CLAMP
#9571.2: For arm components featuring 2.5cm (1") balls.
#9571.23: For arm components featuring 2.5cm (1") balls,
also features a stud extension for mounting the
optional Ikelite DS Sensor or EV Manual Controller.
#9577.2: For arm components featuring 3.2cm (1.3") balls.
[
[G G] ]IKELITE TRAY MOUNT
#9577.1: 3.2cm (1.3") ball with tray mount for Ikelite tray/handle.
#9577.71: 2.5cm (1") ball with tray mount for Ikelite tray/handle.
[
[H H] ]UNIVERSAL MOUNT #9577.5: 3.2cm (1.3") ball with shoe mount.
[
[I I] ]DOVETAIL TRAY MOUNT #9577.7: 3.2cm (1.3") with dovetail mount.
[
[J J] ]NIKONOS MOUNT #9577.6: 3.2cm (1.3") with Nikonos IV/V shoe.
[
[K K] ]SUBSTROBE 50, DS20, DS51 & DS125 MOUNT: Use with ball clamp to secure
strobe mount to ball-socket arm.
#9571.4: 2.5cm (1") ball with mount for DS51, SS50, DS125 strobe.
#9577.41: 3.2cm (1.3") ball with mount for DS51, SS50, DS125 strobe.
[
[L L] ]SUBSTROBE 100A, 200 MOUNT: Use with ball clamp to secure strobe
to ball-socket arm.
#9577.43: 2.5cm (1") ball with mount for SS100A, SS200 strobe.
#9577.42: 3.2cm (1.3") ball with mount for SS100A, SS200 strobe.

22
B
BA AT TT TE ER RY YC CO OM MP PA AR RT TM ME EN NT TF FL LO OO OD DI IN NG G
The battery compartment is separate from the DS51’s factory sealed electronics.
Should the battery compartment flood, flush the compartment with fresh water and
dry thoroughly. Determine the cause of the flooding to the best of your ability. Send
the DS51 and other system components involved to Ikelite for inspection and testing
as soon as possible.
Often, divers find themselves in remote locations for extended periods without
access to multiple strobes. If the strobe with the flooded battery compartment is the
only one available to you at the time and you’re desperate to continue shooting, please
follow these instructions for a temporary fix:
1. Air out and thoroughly dry the battery compartment with air from a blow dryer
or a SCUBA tank hose.
2. Wash out the battery compartment with alcohol. Repeat Step 1.
3. C
Ca au ut ti io on n: :Replace all batteries after battery compartment flooding. Never re-use
batteries that have been wet. The water could create an internal short circuit
in the strobe at some later date, potentially causing an explosion.
Reassemble with batteries.
4. After returning from your trip, send the DS51 and other system components to
Ikelite for inspection and testing.
21
M
MA AI IN NT TE EN NA AN NC CE E
Your Ikelite DS51 Substrobe should be given the same care and attention as your
other photographic equipment. After using your strobe in water, please follow these
instructions to insure the DS51’s longevity and good working order.
R
RO OU UT TI IN NE EC CL LE EA AN NI IN NG G_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
C
Ca au ut ti io on n: :Make sure the DS51’s battery door is on and tightened down before
exposing the strobe to water. Ideally, water should never enter the battery
compartment. If this does occur, see “Battery Compartment Flooding” on page 22.
1. Always rinse the exterior of the DS51 with fresh water after use, especially after
exposure to salt water. While rinsing, turn the mode switch to free salt or debris
that might have accumulated in the DS51’s recesses during the dive.
2. Dry the DS51 thoroughly.
L
LO ON NG GT TE ER RM MS ST TO OR RA AG GE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
C
Ca au ut ti io on n: :Make sure the DS51’s battery door is on and tightened down before
exposing the strobe to water. Ideally, water should never enter the battery
compartment. If this does occur, see “Battery Compartment Flooding” on page 22.
1. Always rinse the exterior of the DS51 with fresh water after use, especially after
exposure to salt water. While rinsing, turn the mode switch to free salt or debris
that might have accumulated in the DS51’s recesses during the dive. Submerging
the DS51 in a body of mildly warm water will clean the exterior of the strobe. After
this soaking, rinse the DS51 once more to wash off any leftover debris or salt.
2. Dry the DS51 thoroughly.
3. Check the battery door’s o-ring and sealing surfaces for any debris and gently
wipe it away with a soft, lint free cloth. Lightly lubricate the exposed part of the
door’s o-ring.
4. Check the DS51’s bulkhead connector threads for debris. Gently wipe away with
a soft, lint free cloth or a cotton swab to clean the threads. Afterwards, lightly
lubricate them.
5. Remove the batteries and store the DS51 with the battery door lightly screwed
on; this will allow any hydrogen/air mixture to escape the battery compartment
and avoid placing unnecessary pressure on the o-ring that could cause it to flatten.
For more information on lubricant, see “Lubricant” on page 20.
In addition to these procedures, it is strongly recommended that this strobe be
returned to Ikelite periodically for inspection and water pressure testing. Ideally your
DS51 should undergo this process every two years or 100 dives, whichever comes first.

23
T
TR RO OU UB BL LE ES SH HO OO OT TI IN NG G
S
ST TR RO OB BE EW WI IL LL LN NO OT TF FI IR RE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
1. Check the DS51’s ready light. Turn the strobe’s mode switch to OFF and then
back to TTL. Make sure that the switch has actually clicked into position.
2. Check that the batteries are inserted according to the “+” and “-“ markings.
N
No ot te e: :it is possible to buy bad “new” batteries; check the voltage output with
a meter. If using NiCad or NiMH batteries, make sure the charger is operating
properly and that the batteries are fully charged.
3. Check the mode switches on the camera and strobe.
4. Check the cord connections at the camera and strobe.
5. C
Ca au ut ti io on n: :When creating a circuit via paper clip, or “shorting,” pay close attention
to which two receptacles you connect. If you short across the wrong receptacles
on a TTL sync cord, you may damage the DS51’s electronics.
The specific receptacles to connect with the paper clip vary based on the type
of cord you own. Please refer to the diagram of two types of flash cord contacts.
When using a sync cord between the camera and strobe, disconnect the cord
from the camera but leave the cord connected to the strobe. Then use the two
ends of a bent paper clip to connect different receptacles on the flash cord
contacts, as detailed in the diagram below. This process, known also as “shorting,”
creates a temporary circuit that can test-fire the strobe.
F
FL LA AS SH HC CO OR RD DC CO ON NT TA AC CT TS S
I
Ik ke el li it te eT TT TL LC Co or rd d: :Point the raised half-circle at the end of the cord encompassing
the receptacles towards you, per the above diagram. Place one end of the paper
clip on the center receptacle and one end on the lower right-hand receptacle.
The DS51 should flash.
N
Ni ik ko on no os sT TT TL LC Co or rd d: :Point the indexing groove at the end of the cord towards you,
per the above diagram. Place one end of the paper clip on the top-most, center
receptacle and one end on the lower, right-hand receptacle. The DS51 should flash.
If the DS51 flashes, the source of the problem lies somewhere in the camera.
If the DS51 does not flash, please send both the strobe and cord used in the test to
an authorized Ikelite dealer or to Ikelite itself; see “Returning Products for Service”
on page 24.
C
Ca au ut ti io on n: :D Do on no ot tattempt to repair the strobe or cord yourself. This may cause
further damage and void your Ikelite limited warranty.
Ikelite Nikonos
PAPER
CLIP
PAPER
CLIP
W
WA AR RR RA AN NT TY YS SE ER RV VI IC CE E
I
IK KE EL LI IT TE EL LI IM MI IT TE ED DW WA AR RR RA AN NT TY Y_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Ikelite Substrobes are warranted against any manufacturing defects for a period of
two years from the date of purchase. All other Ikelite products are warranted against
any manufacturing defects for a period of one year from the date of purchase.
Defective products should be returned prepaid to Ikelite. Ikelite will, at its discretion,
repair or replace such products, and will return them to the customer prepaid. All
other claims, of any nature, including, but not limited to, bulb failure, are not covered.
Except as mentioned above, no other warranty, expressed or implied, applies to this
Ikelite product.
R
RE ET TU UR RN NI IN NG GP PR RO OD DU UC CT TS SF FO OR RS SE ER RV VI IC CE E_ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
Ikelite is most interested in performing any service to assure that all products
perform as intended. For repair service, return the Ikelite product to the address below
with your name, address, phone number, and a brief description of the problem.
Evidence of purchase date must be provided to obtain warranty service. Thank you.
I
IK KE EL LI IT TE EU UN ND DE ER RW WA AT TE ER RS SY YS ST TE EM MS S
Attention: Repairs Dept.
.
50 West 33rd Street
Indianapolis, IN 46208 USA
317-923-4523
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Email: [email protected]
4044.1-07-1206
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