impact VSD-160 User manual

VSD Series Monolight
INSTRUCTIONS
www.impactstudiolighting.com
impact
Page 16
(back cover)
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(front cover)
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To see all of our lighting equipment,
please visit our Web site.
Impact provides a limited warranty that this product is free from defects in
materials and workmanship to the original purchaser under normal use for a
period of one (1) year from the original purchase date. Impact’s responsibility
with respect to this limited warranty shall be limited solely to repair or
replacement, at its option, of any product which fails during normal consumer
use. This warranty does not extend to damage or failure which results from
misuse, neglect, accident, alteration, abuse, improper installation or
maintenance. To obtain a replacement during the time of this warranty,
please return the defective item with proof of purchase along with an RMA
number to the place of purchase. This warranty gives you specic legal
rights, and you may also have other rights which vary from state to state.
©Copyright 2009 Impact

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Thank you for purchasing an Impact VSD Series Monolight. This device is
proof that highly-functional monolights can be affordable. The VSD Series
Monolight provides enough stored power to light a portrait or small still-life
setup and offers features found on monolights costing twice as much. We
expect that you will get many years of trouble-free service and enjoyment
from your Impact VSD Monolight. Please read these operating instructions
and safety precautions carefully before operating this equipment.
Features
• Four-stop range – full power to 1/16 power in .10 f/stop increments
• Large LCD screen
• Built-in optical slave
• “Auto-Dump” feature automatically res the ash when you step down power
• Modeling lamp can be set proportionally or independently of ash power
• Cushioned “touch-pad” function control buttons
• Tactile, “grippy” feel that resists slipping and shock damage
• Accepts Bowen-style reectors and head accessories (7-inch grid reector included)
• User-replaceable ashtube
• Commonly available 1/8˝ mini-plug sync input
Power Requirements
This light is designed for use with 110/120V AC power only and is supplied with a
three-prong, grounded plug. Do not attempt to defeat this safety feature. If necessary,
use only grounded extension cords rated for 6 amps or greater.
Warning
There are no user-serviceable parts inside the unit. Only qualied service engineers
should access the inside of the case (Danger – high-voltage parts inside). Avoid damage
to both the ashtube and modeling lamp. If the modeling lamp or ashtube become
cracked or damaged in any way, they should be replaced immediately. Do not use your
ash unit in an environment where moisture or ammable vapor is likely to come in
contact with the unit. Turn the power off and unplug the power cord when the unit is not
in use. Always remove the modeling lamp and replace the protective cap when
transporting the unit.
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Specications
Model VSD-160 VSD-300
Flash Output 160 Watt/sec 300 Watt/sec
Flash Variations 1/16 – Full
Guide Number1 GN40 GN55
Power Supply 110V AC / 60 Hz
Recycle Time 1-2 seconds @ min. power
Modeling Lamp 60 Watts 100 Watts
Color Temperature 5600 ±200°K
Flash Triggering sync cord, slave cell, test button
Trigger Voltage 4.3V DC
Sync Range ≥10m
Dimensions (mm) 11.6˝ x 8.4˝ x 6.1˝ (with reector)
11.6˝ x 8.4˝ x 5.2˝ (with protective cap)
Weight 3.5 lb
1Guide Number is calculated at 2m, ISO 100, 1/60, using the included reector, and is a starting point.
You should perform your own evaluations to determine the results you prefer.
All images in this manual are for illustrative purposes only. Your unit may differ slightly from the one pictured.

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Contents of carton
Carefully remove the monolight from the box. You should have the following:
• 110-120V monolight with protective cap and ashtube installed
• 100W modeling lamp (60W with VSD-160 model)
• 7˝ grid reector • sync cable
• power cable • user manual
Mount on a stand
(1) Select a stand or support
system of suitable weight
and dimensions to ensure
stable operation of the unit.
Install Reector &
Modeling Lamp
(2) Depress the latch on top
of the monolight, pressing it
toward the back of the unit.
Rotate the protective cap
counter-clockwise. Pull the
cap off and set aside.
(3) Install the modeling
lamp by screwing it into the
threaded socket.
CAUTION: Do not touch the lamp with your bare hands. Oil residue from your ngers can
cause the surface of the lamp to heat unevenly and explode. Use white cotton gloves or a
clean cloth. (4) Install the reector where the protective cap was before. Align the three
pegs on the reector with the three slots, press the reector in and rotate clockwise
until it locks in place.
Note: Take care when tting or removing reectors or softboxes to not damage the
ashtube assembly. The ashtube is very delicate. Always switch off the unit and
disconnect the power before tting or changing lamps, ashtubes, reectors, or softboxes.
Preparing Your Monolight for Use
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Safety Notes
• Do not use your ash in an environment where moisture
may come in contact with the unit.
• A re hazard exists if ammable materials are placed in close proximity
to the ash tube or the modeling lamp. Do not use your ash
in an environment where ammable vapors are present.
• Do not restrict the ventilation holes when the ash is in use.
• Always switch off the power and disconnect the power cord
before changing the fuse, modeling lamp, or ashtube.
• Avoid placing cables where they can be tripped over.
Replace damaged cords immediately.
• Never use a ash unit with damaged covers, moldings, ashtube,
or modeling lamp. If the unit is dropped or damaged,
have it checked by a professional repair service before using.
• Due to the high-voltage circuitry inside this device,
do not attempt to disassemble or repair the unit yourself.
• Keep out of the reach of children.
Maintenance Notes
• Turn the power off and unplug the power cord when the ash is not in use.
• We recommend charging the ash unit for one to two hours prior to its initial use
and after an extended period of inactivity (more than two weeks).
• If the unit is left unused for a few months, or the unit has been used predominantly
at low power settings, we recommend that the power be increased
to the maximum and the unit left switched on (with the modeling lamp OFF)
occasionally for at least 30 minutes to help preserve the life of the capacitors.
• Avoid rapid, high-power ashing, especially when using restrictive reectors
such as snoots or grids. Excessive heat will shorten the lifespan of your ash unit,
modeling lamp, and ashtube.
Safety and Maintenance Notes

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Best Practices
As with any ash unit, the useful life of the ashtube and the unit as a whole depends on
the way it is used. Avoiding excessive heat is the key to long life.
• The fast recycling feature of the VSD Series allows a rapid sequence of high-power
ashes. However, this feature should be used sparingly, since continuous rapid ashing
can cause overheating and subsequent damage to the ashtube and possibly the
internal electronics.
• Rapid sequences of ashes should always be followed by a reasonable cooling period,
10 to 20 minutes without ashing, or at a substantially reduced rate.
• Dimming or turning the modeling lamp off will reduce heat generation.
• Avoid rapid high-power ashing when using restrictive reectors such as snoots or
grid reectors, particularly if the unit is pointing downward.
• Do not ash over 12 shots per minute for more than 10 minutes.
• Do not ash over 8 shots per minute for more than 30 minutes.
• Take special care when shooting in a high-temperature environment.

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Legend
A – Digital Power Readout K – Photo Slave Control
B – Modeling Light Control – Up L – Photo Slave LED
C – Modeling Light Control – Down M – Test Fire Button
D – Flash Power Control – Up N – Full Recycle Status LED
E – Flash Power Control – Down O – Mini-plug Sync Jack
F – Modeling Lamp Control P – On/Off Switch
G – Modeling Lamp LED – Free Q – Power Socket
H – Modeling Lamp LED – Proportional R – Fuse Holder
I – Recycle Tone Control S – Umbrella Holder
J – Recycle Tone LED T – Photocell
Power Supply
Plug the power cord into the back of the ash unit. Before plugging the power cord into
the wall socket, make certain that the power switch is set to the OFF (circle) position. The
VSD is designed to automatically ash, if necessary, when turned off. The resistive dump
will continue to reduce any remaining energy while the unit is off. This is a safety feature
and cannot be disabled.
Note: The VSD flash unit is designed to work on 110-120V 50/60Hz AC current.
Power Switch
Turn the power switch to the ON (line) position. The flash will
sound a beep and the LCD will show the current ash power
setting. We recommend charging the flash unit for one hour
prior to its initial use and after an extended period of inactivity
(more than two weeks). If the unit is left unused for a few
months, or the unit has been used predominantly at low power
settings, we recommend that the power be increased to the
maximum and the unit left switched on (with the modeling lamp
OFF) for at least 30 minutes, to help preserve the life of the
capacitors.
Operating Instructions
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Changing the Fuse
A 6A fuse is mounted in the rear panel and protects the circuitry of the flash unit. Turn off
the unit and disconnect the power supply before changing the fuse. Never replace with a
fuse of a different type or rating. A spare 6A fuse is tted within the fuse holder. Use a
small screwdriver to release the fuse cover. Remove the old fuse, place the new fuse in
the slot, then replace the fuse holder.

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Flash Output
The ash power output is variable over a four
f/stop range (ve f/stops) from full power to 1/16
power in 1/10 f/stop increments. The power is
displayed on the LCD screen. Minimum setting is
2.0 and the maximum is 6.0. Pressing the up and
down touch-pad buttons under the LCD changes
the value by 0.1 f-stop (a total of 40 values). If the
current value is 5.6 and you want to reduce the
power by one stop, set the power to 4.6.
“Auto-Dump” Feature
While raising the ash power requires no
special consideration, lowering the power
does. Excess power that has built up in the
system’s capacitors must be released. The
VSD Monolight employs an “auto-dump“
or “auto-bleed” feature to accomplish this,
in order to avoid the necessity of manually
popping the ash after every adjustment.
When lowering the power, expect the ash
to automatically re to release the excess
power.
Caution: To avoid eye damage, do not look into the strobe while ring. Do not re the ash
in close proximity to the face. Turn the unit off when changing attachments.
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Flash Settings
Setting Power
6.0 Full Power
5.0 1/2 Power
4.0 1/4 Power
3.0 1/8 Power
2.0 1/16 Power
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Discharge the Flash Unit
The charge in the flash unit must be discharged before removing the flashtube. Make
sure the flash unit is on. Push the TEST button on the rear panel of the flash. The unit will
flash, discharging the power. Immediately turn off the power switch on the rear panel.
Unplug the power cord from the power source. It is advisable to wait at least 30 minutes
before touching or removing the flashtube.
Remove Old Flashtube
First, remove the reflector. Then, using white cotton gloves or a clean cloth, remove the
modeling lamp. You will need to remove the retention spring wrapped around the top of
the flashtube. With needle-nose pliers, unhook the retention spring loop. Using white
cotton gloves or a clean cloth, grip the base of the flashtube on each side. Carefully pull
the flashtube from the flash unit.
Install New Flashtube
Make sure the power switch is off and the power cord is disconnected from the source.
Locate the two flashtube pin sockets below the modeling lamp socket. Using white
cotton gloves or a clean cloth, push the pins of the flashtube into the sockets using firm,
even pressure at the base of the flashtube. With needle-nose pliers, fasten the retention
spring over the hook above the flashtube. Re-insert the modeling lamp using white cotton
gloves or a clean cloth. Re-install the reflector.
Changing the Flashtube

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There are three modes for the modeling light:
Proportional, Full, and Off. You can choose a mode by
pressing the modeling lamp control button, which is
to the left of the FULL and PROP LEDs. Each time you
press, the mode will change.
Proportional Mode
During normal use, most photographers will use a
monolight in “proportional” mode. The modeling light
intensity will increase or decrease in response to
changes in the ash power. In this mode, the PROP
LED will be lit and adjustments to the ash power
buttons will also adjust the power to the modeling
lamp proportionally.
Full Mode
The VSD allows you to set the ash and modeling
light to different intensities. You may wish to reduce
the intensity of the modeling lamp but keep the ash
power where it is. Depress the up or down modeling
lamp buttons to the desired level on the digital
readout (2.0 to 6.0). When you are nished adjusting
the modeling light, the digital readout will blink four
times before returning to display ash power. The
FULL status LED will be lit during this mode.
Off
To turn off the modeling light, depress the modeling
light button until the lamp is extinguished. The PROP
and FULL status LEDs will be off.
Modeling Lamp Settings
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Modeling light and ash power
are controlled simultaneously.
Modeling light and ash power
are controlled independently.
Modeling light is off.
Umbrellas
An umbrella with a shaft diameter of up to 8mm can be secured in the umbrella holder.
Firmly press the umbrella shaft through the holder. The locking knob is located beneath
the holder. Do not overtighten to avoid damaging the shaft of the umbrella.
The monolight can be
pointed up or down by
loosening the release lever.
Adjust to your preferred
angle and then tighten the
lever back down.
Use of Umbrellas and Softboxes
Softboxes
The VSD Monolight accepts softboxes with a Bowen mount-design speed ring. Install the
softbox the same way you install reectors. Match up the three tabs at the back of the
softbox speed ring with the three slots on the ash head. Press in and turn clockwise
until the softbox locks in place.

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TEST Button
There are three ways to trigger your ash, but the simplest is to press the TEST button.
This is useful when you need to discharge the power built up in the ash unit, for example
just before replacing the ashtube (more on that later).
Sync Connection
The sync jack on the VSD Monolight may be used for
direct connection to a camera set to ‘X’ synchronization.
Insert the “PC” end of the supplied sync cord into the
connection on your camera and the other mini-plug end
into the sync jack on the back panel of the VSD. A radio
slave receiver may also be plugged into this jack.
Photocell
The VSD Monolight features a photocell which allows the
flash unit to be triggered by another flash. This is called
“optical slave mode.” The photocell is located
underneath the red transparent cover on top of the unit.
The photocell is very sensitive but some experimentation
with positioning may be necessary to ensure a reliable
trigger, particularly if the cell is not in the direct line of
sight of the triggering ash unit. Avoid directly
illuminating the photocell from a continuous light source
(such as ceiling lights or windows) since this can prevent
correct operation. Very high ceilings can also affect the
operation of the photocell.
To operate your VSD as a “slave” to another ash,
disconnect any sync cords and press the “eye” button
until the bottom status LED is on. The two LEDs above
this light are reserved for future features. The bottom
LED must be lit to be in slave mode.
Triggering the Flash
Sync connection: step 1
Sync connection: step 2
Slave Mode
Audible Beep Settings
To Turn the Audible Beep Off
A beep will sound when the ash has recycled and is
ready to ash again. You can turn this audible beep off
by pressing the AUDIO button with the musical eighth
notes. The small LED next to this button will not be lit
when the audible beep has been turned off.
If you have turned the audible beep off, you can still
conrm that the ash has recycled and is ready to re
by looking at the small LED next to the TEST button.
When the ash has recycled, this LED will be lit. Audible beep is off.

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TEST Button
There are three ways to trigger your ash, but the simplest is to press the TEST button.
This is useful when you need to discharge the power built up in the ash unit, for example
just before replacing the ashtube (more on that later).
Sync Connection
The sync jack on the VSD Monolight may be used for
direct connection to a camera set to ‘X’ synchronization.
Insert the “PC” end of the supplied sync cord into the
connection on your camera and the other mini-plug end
into the sync jack on the back panel of the VSD. A radio
slave receiver may also be plugged into this jack.
Photocell
The VSD Monolight features a photocell which allows the
flash unit to be triggered by another flash. This is called
“optical slave mode.” The photocell is located
underneath the red transparent cover on top of the unit.
The photocell is very sensitive but some experimentation
with positioning may be necessary to ensure a reliable
trigger, particularly if the cell is not in the direct line of
sight of the triggering ash unit. Avoid directly
illuminating the photocell from a continuous light source
(such as ceiling lights or windows) since this can prevent
correct operation. Very high ceilings can also affect the
operation of the photocell.
To operate your VSD as a “slave” to another ash,
disconnect any sync cords and press the “eye” button
until the bottom status LED is on. The two LEDs above
this light are reserved for future features. The bottom
LED must be lit to be in slave mode.
Triggering the Flash
Sync connection: step 1
Sync connection: step 2
Slave Mode
Audible Beep Settings
To Turn the Audible Beep Off
A beep will sound when the ash has recycled and is
ready to ash again. You can turn this audible beep off
by pressing the AUDIO button with the musical eighth
notes. The small LED next to this button will not be lit
when the audible beep has been turned off.
If you have turned the audible beep off, you can still
conrm that the ash has recycled and is ready to re
by looking at the small LED next to the TEST button.
When the ash has recycled, this LED will be lit. Audible beep is off.

10
There are three modes for the modeling light:
Proportional, Full, and Off. You can choose a mode by
pressing the modeling lamp control button, which is
to the left of the FULL and PROP LEDs. Each time you
press, the mode will change.
Proportional Mode
During normal use, most photographers will use a
monolight in “proportional” mode. The modeling light
intensity will increase or decrease in response to
changes in the ash power. In this mode, the PROP
LED will be lit and adjustments to the ash power
buttons will also adjust the power to the modeling
lamp proportionally.
Full Mode
The VSD allows you to set the ash and modeling
light to different intensities. You may wish to reduce
the intensity of the modeling lamp but keep the ash
power where it is. Depress the up or down modeling
lamp buttons to the desired level on the digital
readout (2.0 to 6.0). When you are nished adjusting
the modeling light, the digital readout will blink four
times before returning to display ash power. The
FULL status LED will be lit during this mode.
Off
To turn off the modeling light, depress the modeling
light button until the lamp is extinguished. The PROP
and FULL status LEDs will be off.
Modeling Lamp Settings
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Modeling light and ash power
are controlled simultaneously.
Modeling light and ash power
are controlled independently.
Modeling light is off.
Umbrellas
An umbrella with a shaft diameter of up to 8mm can be secured in the umbrella holder.
Firmly press the umbrella shaft through the holder. The locking knob is located beneath
the holder. Do not overtighten to avoid damaging the shaft of the umbrella.
The monolight can be
pointed up or down by
loosening the release lever.
Adjust to your preferred
angle and then tighten the
lever back down.
Use of Umbrellas and Softboxes
Softboxes
The VSD Monolight accepts softboxes with a Bowen mount-design speed ring. Install the
softbox the same way you install reectors. Match up the three tabs at the back of the
softbox speed ring with the three slots on the ash head. Press in and turn clockwise
until the softbox locks in place.