Sony SSC-M370 User manual

SERVICE MANUAL
imaging system
Pickup device
Effective picture elements
Sencing area
Optical system and miscellaneous
Lens mount
Signal system
Scanning system
Synchronization
SPECIFICATIONS
4 2
Inter-line transfer type CCD a
UC: 768 x 494 (horizontal/vertical)
EK: 752 x 582 (horizontal/vertical) 34
6.3 x 4.7 mm (Y% x 3/1, inches) Side of camera body
Power requirements
C mount
UC: EIA standard
EK: CCIR standard
UC: 525 lines, 2:1 interlace, 30 frames per second
EK: 625 lines, 2:1 interlace, 25 frames per second
Internal or external (automatic switching)
External synchronizing signal input
Horizontal resolution
Minimum illumination
Video output
Video S/N ratio
Electronic shutter
AGC
VS (sync level 0.3 Vp-p, 75 ohms)
570 TV lines
0.5 lux at F/1.2 (AGC on)
1.0 Vp-p, 75 ohms, sync negative
50 dB minimum (AGC off)
UC: 8 settings: 1/60 s, 1/100 s, 1/250 s,
1/500 s, 1/1000 s, 1/2000 s,
1/4000 s, 1/10000 s
EK: 8 settings: 1/50 s, 1/120 s, 1/250 s,
1/500 s, 1/1000 s, 1/2000 s,
1/4000 s, 1/10000 s
Switchable on/off
Input and output connectors
DC 12V terminals
VIDEO OUT (when using combined power cable:
DC IN.VS IN/VIDEO OUT) BNC type
VS IN (when using combined power cable:
MONITOR OUT) BNC type
LENS: 4-pin connector (pin assignment as follows)
Power consumption
Operating temperature
Storage temperature
Relative humidity
(operating)
Relative humidity
(storage)
Shock resistance
External dimensions
(wih/d)
Weight
Accessories supplied
Power supply (9 V DC, 50 mA)
Unused
Video output signal for lens (0.7 Vp-p, no
synchronization signal)
Ground
For 12 V DC supply: 12 VDC + 10%
For YS-W130/W230 camera adaptor: 24 V DC +5 V
For 12 V DC supply: 2.8 W
For YS-W130 /W230 camera adaptor: 4.0 W
—10°C to 50°C (14°F to 122°F)
—40°C to 60°C (-40°F to 140°F)
20% to 80%
20% to 95%
70G
64 (mm) x 57 (mm) « 155 (mm)
(25/g x 2% x 6%, inches)
(excluding external projections)
660 g approx. (1 Ib 7 oz)
Lens mount cap
4-pin plug for lens cable
Operation manual
Recommended equipment
UC: YS-W130/W230 camera adaptor
EK: YS-W130P/W230P camera adaptor
Design and specifications are subject to change without notice.
COD Black-and-White Video Camera
SONY.

SSC-M370/M370CE |
TABLE OF CONTENTS
SECTION 1 GENERAL
TA FEATURES. sscssccicssecedsscesetsccbsess .cestcactensssesatcavcesssie 1-1
1-2. NOTES ON USE woo. cccessessessenseneesereseeseeenees 1-1
1-3. LOCATION AND FUNCTION OF PARTS
AND CONTROLS... ececcteeeeseessseeeeeeeseenseneenes 1-2
1-4. INTERNAL SWITCH SETTINGS... ceeesreeeeee 1-3
1-5. MOUNTING THE LENS ou... ectessensstneesencenee 1-3
1-6. CONNECTIONS. ou... eeeeesesececetseesssneesensessenseesenees 1-4
1-7. CCD CHARACTERISTICS ......seesseesssecssrereseesseeeees 1-4
SECTION 2 SERVICE INFORMATION
2-1. REMOVAL OF MAIN PARTS. ..........::ccsssceessereeees 2-1
2-1-1. Removal of the Case oo... ceescesseeessnereneees 2-1
2-1-2. Removal of the PR-32, TG-31, FC-30
BOAldS iccscecepekstecctiessccssseecedeees hdl Geeeteenticiate 2-2
2-1-3. Removal of the CB-31 Board ............ eee 2-2
2-1-4. Removal of the CCD Block Assy ............6 2-3
2-2. REPLACEMENT OF CCD BLOCK .........eceeeseeeeeee 2-4
SECTION 3 THEORY OF OPERATION
3-1, BI-32 BOARD oo... cscssessssesessessessessesesssessneoeesseeees 3-1
3-2. TG-31 BOARD ......ccccscssesecessensseerseeseeseeeetenenesentens 3-1
3-3. PR-32 BOARD .......ccseccssessssseeseessenensseesaseseseesaesnse 3-2
3-4. FC-30 BOARD ......ecesessesssssesesseececeeesseesesseensenenes 3-2
3-5. MB-31 BOARD. .......csssscesssscecsesssesseseeseeseeseeseeenens 3-3
3-6. H BOARD. .....csscssssssssssesccssessssseesessseseseeeeserseeseeees 3-3
3-7. CB-31 BOARD 1... csessceseeesseeseneseeeesseneeeesnereeses 3-3
SECTION 4 ADJUSTMENT
4-1. PREPARATION .........:sscsesessseceessssesesseeesseesseeneese 4-1
4-1-1. Adjustment Fixture and Equipment ............ 4-1
4-1-2. Connection for Adjustment .............:ceeereeees 4-2
4-2. MECHANICAL BACK FOCUS ADJUSTMENT .. 4-3
4-3. VCO ADJUSTMENT ........eseeccseesecsessessesssensseeeees 4-3
4-3-1. VCO Adjustment (1)... seeceseeesresseseeesseees 4-3
4-3-2. VCO Adjustment (2) ......cccceetteeneeseeetene 4-3
4-4. SIGNAL PROCESS ADJUSTMENT ........... eee 4-4
4-4-1. PGLL Adjustment ..........cceeeseeeseeersenereeeeeees 4-5
4-4-2. VSUB Voltage Adjustment ..........ccscee 4-5
4-4-3. GAIN 0 dB Adjustment............. ee eeeeceeeeeeeeee 4-5
4-4-4. Auto Iris Video Level Adjustment ................ 4-5
4-4-5. Pedestal Y GAIN Adjustment ................00000 46
4-4-6. AGC MAX Adjustment ..........ceeceeeeeeeeeeeeeee 4-6
4-4-7. AGC Set Adjustment .............: ec ceeeeeeeeeeeees 4-6
4-4-8. CCD IRIS Level Adjustment ............. eee 4-7
SECTION5 DIAGRAMS
5-1. BLOCK DIAGRAMS. ou... cece sceeeneeese ree teeeeeneneee 5-1
5-2. BOARD LOCATION uu... ceeccessteeseressseceeeseneesenere 5-5
5-3. SCHEMATIC DIAGRAMS AND PRINTED
CIRCUIT BOARDS. oun... eee ceeeseeseeneeeseeeenseeaes 5-6
¢ BI-32, TG-31, LC-31 BOARDS. ou... ecceeeeeeeeeeeteeee 5-7
@ PR-32 BOARD oi siccccsvciesccsnscccscesiasivtcesnesesedvenedancecess 5-16
@FC-30, BOARD .., .essinaceitvccrecsdadeevevetessesevbovecesasnestececde 5-20
¢ MB-31, CB-31, H-30 BOARDS. ou... eee eeeeeeeee 5-25
@ FRAME ccc ccsccesscessssesescetsienscectscesesescenetnasatiecessetcgvies 5-30
5-4. SEMICONDUCTOR PIN ASSIGNMENTS .......... 5-33
SECTION 6 REPAIR PARTS
6-1. EXPLODED VIEW AND PARTS LIST. .........eees 6-1
6-2. ELECTRICAL PARTS LIST 0... eeseeesesseesseeseenes 6-3
6-3. PACKING MATERIAL & ACCESSORY ............. 6-9

SSC-M370/M370CE
SECTION 1
GENERAL
1-1. FEATURES
The SSC-M370/M370CE black-and-white video camera uses a 1/2-inch CCD
(Charge Coupled Device) with 768 (SSC-M370)/752 (SSC-M370CE) (horizontal)
by 494 (SSC-M370)/582 (SSC-M370CE) (vertical) picture elements. The following
are some of its principal features.
High resolution
The number of CCD picture elements (about 380,000) is sufficient to ensure
high resolution.
High sensitivity
Gives a clear picture even under very gloomy conditions.
CCO IRIS function
Even when a manual iris lens is fitted, the sensitivity is automatically
adjusted according to the incident light level. This keeps the video signal at
a Suitable level.
Electronic shutter function
Eight shutter speeds are available, for various shooting conditions.
External synchronization
A number of cameras can be synchronized with the same reference
synchronizing signal so that they can be controlled by a video switcher; you
can switch from a camera to another without causing picture distortion on
the monitor screen.
Combined power cable (using YS-W130/W230 camera adaptor)
A single 75-ohm coaxial cable (not supplied) connecting the camera to a
YS-W130/W130P/W230/W230P camera adaptor (not supplied) carries the video
output signal, as well as the power supply input and external synchronizing signal.
Auto-iris lenses
A C-mount auto-iris lens can be used, by connecting the lens cable with
the plug supplied.
1-1
1-2. NOTES ON USE
Power supply
This unit must always be poerated with a 12 V DC power supply, or using
the YS-W130/W130P/W230/W230P camera adaptor (not supplied).
Handling of the unit
Be careful not to spill water or other liquids on the unit, or to get
combustible or metallic material inside the body. If used with foreign matter
inside, the camera is liable to fail, or be a cause of fire or electric shock.
Operating and storage locations
Avoid shooting a very bright object (such as light fittings) for an extended
period. Avoid operating or storing the unit in the following locations.
* Extremely hot or cold places (operating temperature —10°C to 50°C; 14°F
to 122°F)
¢ Damp or dusty places
¢ Where it is exposed to rain
¢ Locations subject to strong vibration
¢ Close to generators of powerful electromagnetic radiation such as radio
or TV transmitters
Care of the unit
¢ Remove dust or dirt on the surface of the lens or glass cover with a
blower.
¢ Clean the body with a dry soft cloth. If it is very dirty, use a cloth
dampened with a smail quantity of neutral detergent, then wipe dry. Avoid
the use of volatile solvents such as thinners, alcohol, benzene, and
insecticides. They may damage the surface finish, or impair the operation
of the camera.
|

SSC-M370/M370CE
1-3. LOCATION AND FUNCTION OF PARTS
AND CONTROLS
Front and side
MODE
setting - | owt | output | Connecteato: |
Power supply and external ; YS-W130/W130P/ W230/We30P
synchronizing signal Video signal camera adaptor
fs | — | Video signal | Video monitor or switcher
[1] BACK FOCUS
adjusting screw MONITOR OUT connector (in mode A)/VS IN connector (in mode B)
This is a BNC type coaxial connector to be used as follows depending on the
[2] LENS connector setting of the MODE switch [5].
Lens mount {3] Mounting screw holes
(C mount)
{1}
BACK
FOCUS
adjusting
screw
External
synchronizing
Synchronizing
signal
The
camera
is
shipped
with
the
back
focus
adjusted
to
suit
almost
ail
lenses.
If
signal
generator
necessary,
turn
this
screw
with
a
screwdriver
to
adjust
the
focal
plane.
It
has
a
self-locking
mechanism,
so
once
adjusted
the
focus
will
not
drift.
When using the camera with a 12 V DC power supply directly conected, if the MODE
22)
LENS
connector
(4-pin)
switch
[5]
setting
is
left
at
A,
then
a
video
monitor
connected
to
this
connector
wilt
When
using
an
auto-iris
or
zoom
lens,
replace
the
plug
on
the
lens
cable
with
not
get
a
correct
video
signal.
In
this
case,
set
the
MODE
switch
[S]to
B,
and
the
plug
supplied
with
the
camera,
and
plug
into
this
connector.
connect
the
monitor
to
the
VIDEO
OUT
connector
[7].
[3]
Mounting
screw
holes
[3]
De
12V terminals
Use these holes to fix the camera to a mounting bracket or tripod. The mounting
Sonnect these terminals to a 12 V DC power supply.
screw
must
be
as
follows.
Connect
these
termi
C
pl
pply.
+: +12V
—: ground
4/4”
UNC
(20
pitch)
When
using
a
12
V
DC
supply
connected
directly
to
these
terminals,
always
set
the
MODE
switch
[5
]to
8.
€: 4.5mm +0.2 mm (ISO standard), or = { e internal enuchiea
0.197” (ASA standard)
Power indicator. DC IN.VS IN/VIDEO
OUT connector
(in mode A)
VIDEO OUT
connector
(in mode B)
{8] MONITOR OUT
connector
(in mode A) [10] AGC switch
VS IN connector
(in mode B)
[6]
H
PHASE
buttons
[3]DC
12V
terminals
[ii] CCD IRIS switch
[4] DC 12V power switch [12] SHUTTER switch
This turns the power on and off when using a 12 V DC power supply directly
connected. It has no effect when the camera is used with a YS-W130/
W130P/W230/W230P camera adaptor.
=
[5] MODE switch AGC switch
This switch determines the power supply mode. This switches the automatic gain control on or off.
Mode A: for use with a YS-W130/W130P/W230/W230P camera adaptor (not i IRIS switch
supplied). CCD IRIS swite
Mode B: for use with a 12 V DC power supply connected to the terminals [9]. This switches on and oft the ccD IRIS function, which automatically adjuststine
The video connectors 7 and 8 also have different functions depending on the Sensitivity according to the incident light conditions.
m ting.
ileal [2] SHUTTER switch
[6] H PHASE (horizontal phase) buttons This Switch is effective when the CCD IRIS switch is off. It sets the shutter seed
Use these buttons to compensate for horizontal phase discrepancies which will to any of eight fixed settings, from 1/60 to 1/10000 second.
occur when the camera is used with an extended cable. Use the tip of a ball-
point pen or similar instrument to press the buttons, which are recessed.
DC IN.VS IN/ VIDEO OUT connector (in mode A)/
VIDEO OUT connector (in mode B)
This is a BNC type coaxial connector to be used as follows depending on the
setting of the MODE switch [5].
1-2

1-4. INTERNAL SWITCH SETTINGS
Before installing the camera, set the internal switches according to the
SSC-M370/M370CE
1-5. MOUNTING THE LENS
Suitable lenses
following
procedure.
The
lens
must
be
a
C
mount
type,
and
the
screw
thread
must
not
project
more
than
9
mm
(9/,
inches)
from
the
fens
mounting
surface.
1
Remove
the upper
cover
from
the
camera
body.
Lens mounting surface
Remove the 6 fixing screws.
{
9mm max.| 6
!
This
camera
uses
a
1/2-inch
CCD,
so
the
lens
should
be
for
use
with
this
size
of
CCD.
In
particular,
if
used
with
a
lens
for
a
2/3-inch
CCD
the
angle
of
view
will
be
different.
Plug fitting for an auto-iris lens
The
camera
is
supplied
with
a
plug
to
fit
the
LENS
connector.
To
connect
an auto-iris
lens,
first
replace
the
plug
on
the
lens
cable
with
the
plug
supplied.
1
Solder
the
lens
cable
wires
to
the
pins
on
the
plug
supplied;
apply
heat
after
putting
heat
shrink
sleeving
on
the
wires.
The
pin
assignment
is
as
follows.
Pin 1: Power supply (+9 V DC, 50 mA)
Pin 2: Unused
Pin
3:
Video
signal
output
(for
auto-iris
control;
0.7
Vp-p,
40
k
ohms,
no
synchronizing
signal)
Pin 4: Ground
(Refer
to
the
operation
manual
for
the
lens
to
determine
the
cable
color
coding.)
2 Put the cover on the plug.
Internal switches ———
—— To auto-iris lens
2 Set the switches according to the conditions in which the camera is to
be used.
Rib
(If the cable is thick and
the plug cover does not
seat properly, cut away
this rib.)
Switch
AGC ON
OFF (gain: 0 dB)
CCD IRIS* | ON
OFF
SHUTTER | (only effective when
CCD IRIS is off)
0: 1/60 s
(SSC-M370)
11/50 s
(SSC-M370CE)
1:1/100s
(SSC-M370)
1:1/120s
(SSC-M370CE)
: 1/250 s
: 1/500 s
: 1/1000 s
: 1/2000 s
: 1/4000 s
: 1/10000 s
—--—-——=
Lens
plug
(supplied)
Fitting the lens
When using an auto-iris lens, fit it as follows. For a manual iris lens, omit
step 3.
o
1 Unscrew the lens mount cap.
NOOR WM
Plug supplied
with camera
3 Replace the upper cover on the camera body.
* CCD IRIS function. When using a manual iris lens, this function
automatically adjusts the shutter speed to maintain a suitable exposure
level. Turn this switch off when using an auto-iris lens. 3 Plug in the lens cable.
2 Screw in the lens.
1-3

SSC-M370/M370CE
1-6. CONNECTIONS
Connecting to a 12 V DC Power Supply |
Set the MODE switch to B, connect the power supply, then turn the DC 12V Using a number of synchronized cameras
switch on. The output video signal of one camera can be used for synchronizing the
other cameras. The connections for a two-camera system are illustrated
Operating with an internal synchronizing signal below.
For synchronizing more than two cameras, you are recommended to use a 7
SSC-M370/M370CE 5, axial cable YS-W230/W230P camera adaptor. You can connect up to four cameras to asingle
———
Video
monitor
YS-W230/W230P.
to VIDEO OUT
Sonnecr to video input SSC-M370/M370CE :
Ground connector roo soln
to DC IN.VS IN/
VIDEO OUT connector
to CAMERA IN connector
YS-W130/W130P (No. 1) .
CONNECT TO ANY 752 switch: ON
CLASS 2 POWER SUPPLY
Video monitor
to
VIDEO
OUT
connector
to
VIDEO
OUT
Operating with an external synchronizing signal to DC IN.VS IN/ connector
VIDEO
OUT
VIDEO
OUT
to
video
input
(===
=
SSC-M370/M370CE
°°
SSC-M370/M370CE
connector
connector
connector
75-ohm
coaxial
cable
Db
Video
monitor
ae}
ito video inpu
connecto
Video signal
source such as
video camera
(synchronizing
signal supply)
+12V | terminals
Video monitor
to VIDEO OUT
fame tee
power
supply
to
video
input
CONNECT
TO
ANY
connector
CLASS 2 POWER SUPPLY
1-7. CCD CHARACTERISTICS
Connecting to a YS-W130/W130P Camera Adaptor
(Not Supplied) (Combined Power Cable) The following conditions that may be observed when using a CCD camera
are not associated with any fault of the camera.
The following table gives the maximum lengths of the 75-ohm coaxial
cable.
|
RG-§9B8/U
RG-6A/U
RG-11A/U
|
cabletme
|
"econ
|
‘eo
Maxi
|
Set the MODE switch to A, make the connections, then turn on the POWER
switch on the YS-W130/W130P camera adaptor.
Vertical smear
This phenomenon occurs when shooting a very bright object.
Pale vertical streak
Video monitor screen
Very bright object
(such as an electric lamp,
fluorescent lamp, suniight,
or strong reflected light)
Using a single camera
to video input
connector
Portable video monitor
(for adjusting the
camera view angie at
the time of installation)
SSC-M370/M37OCE
|,
wonton
Crane
O||
OUT
connector
comial
cable
Patterned noise
This is a fixed pattern which may appear over the entire monitor screen
when the camera is operated at a high temperature. sf
Wavy picture
MODE switch: A 7) ————— When shooting stripes, straight lines, or similar patterns, the image on the
screen may appear jagged.
to VIDEO OUT connector q
to video
input connector
1-4

| SSC-M370/M370CE
SECTION 2
SERVICE INFORMATION
2-1. REMOVAL OF THE MAIN PARTS
@) Two Screws (+B2x4)
2-1-1. Removal of the Case @ Upper case ASSY
@) Two Screws (+B2x4)

SSC-M370/M370CE
2-1-2. Removal of the PR-32, TG-31, FC-30 Boards
@) FC-30 Board
ee @ TG-31 Board
@) PR-32 Board
Note:
When mounting, hold the bottom of MB-31
board and securely insert it.
@ MB-31 Board
To H-30 Board
2-1-3. Removal of the CB-31 Board
@
Three
Screws
(+B2x4)
@
Rear
block
ASSY
@ Remove the four solder point of the CN702, 703
2-2

SSC-M370/M370CE
2-1-4. Removal of the CCD Block Assy
@ Remove the solder point
© BI-32 Board
@ Three Screws (+P2x4)
@® Screw (+B2x4)
@ CCD block ASSY
@ H-30 Board
@) Two Screws (+K2x3)
2-3

SSC-M370/M370CE |
2-2. REPLACEMENT OF CCD BLOCK
Each CCD’s own values of the VSUB is required for the
adjustment. This value is shown at the back of the CCD
imager. :
The. value is shown
CCD Block ASSY
Post the values to the front block ASSY before soldering
the BI-32 board on the CCD block ASSY.
Post the values
The factory-set values of the CCD imager are pasted in the
front block ASSY in the same way.

SSC-M370/M370CE
SECTION 3
THEORY OF OPERATION
3-1. BI-32 BOARD
The BI-32 board has the CCD imager which changes light
into electric signals. On the CCD chip, 411988 [473820]
photosensors are arranged in 811 [795] horizontally and
508 [596] vertically. Among them, 379392 [437664] are
effective picture elements arranged in 768 [752]
horizontally and 494 [582] vertically.
The incident ray is converted into charge according to the
light intensity in the photosensor block, read from the
photosensors to the transfer block, and transferred
successively to the output block.
Thetransfer block has two parts; the vertical transfer block
and the horizontal transfer block.
The charge converted by the photosensors is transferred
for every field to the vertical block next to each photosensor.
The charge which is transferred to each vertical transfer
block is transferred in a vertical direction in the vertical
‘transfer block V1,V2,V3 and V4, and transferred to the
progressive horizontal transfer block.
The horizontal transfer block transfers the charge in the
horizontal transfer clock H1 and H2 in a horizontal direction
to the output block.
The condenser in the output block converts the charge
into the voltage signal, and the signal is output from the
1C101. Then it goes through the Q101 buffer and is
transferred to the TG-31 board.
Note: The figures in[ ] show the SSC-M370CE.
3-2. TG-31 BOARD
The board has the following blocks.
@ Sample and Hold/AGC
@ Timing Signal Generation for CCD drive
@ CCD Vertical Transfer Clock Driver
@ SYNC Signal Generation
® VCO for External SYNC
© External SYNC
@®) External SYNC Horizontal Phase Adjustment
V SUB Voltage Supply/CCD IRIS Circuit
IRIS/AGC
3-1
@ Sample and Hold/AGC
The signal output from the CCD imager is branched into
the DATA signal and PG signal, and both undergo sample
and hold in each timing and signal separation.
The DATA and PG signals input to the IC401 both undergo
sample and hold by the sample and hold pulse XSHP and
XSHD. The PG signal undergoes sample and hold three
times in the order of XSHP, XSHD and XSHP. The DATA
signal undergoes it twice in the order of XSHD and XSHP.
The signal separation is executed according to the
difference between the DATA and PG signals. The
separated signals are input in the AGC amplifier and
detected by the detection circuit installed to the IC401 to
keep the value reasonable.
@ Timing Signal Generator for CCD Drive
Inputting the HD and VD pulses of the 28 MHz basic clock
oscillation circuit output and the SYNC signal generator
(1C406) makes the IC405 generate the clock, sample and
hold, and clamp pulse necessary for CCD drive.
e CL : 28 MHz basic clock +2
e Hi, H2 :H register drive pulse for
CCD imager
e XV1, XV2, XV3, XV4 : V register drive pulse for
CCD imager
(Output to the BI-32 board
through the drive circuit of
IC 403 with XSGI and XSG2)
e PG : Pre-charge gate pulse
e CLP1, CLP2, CLP3, CLP4 : Various clamp pulse
e XSHP, XSHD : Pulse for signal separation
sample and hold
e XDL1, XDL2 : Pulse for Y signal recom-
position sample and hold
The above clock or pulses are output. Also, the charge
discard pulse X SUB for shutter speed control is output
from this IC.
@ CD Vertical Transfer Clock Driver
Drive the CCD imager Vregister drive pulse. This IC drives
the following pulses; XV1, XV2, XV3, XV4, XSG1, XSG2
(all output from the IC405), and the charge discard pulse
X SUB.

SSC-M370/M370CE
@ SYNC Signal Generation
Inputting the CL signal makes the IC406 generate the
various timing signals necessary for making the video
signals.
e SYNC : Composite SYNC signal
e HD, VD: Horizontal or Vertical SYNC signal
e BLK ~ : Blanking signal
© VCO for External Synchronism
The LC-31 board generates the 28 MHz basic clock necessary
for external synchronism, and it has the following input
and output.
e Oscillation ON/OFF control input
e Oscillation frequency contro! input
e 28 Mt basic clock output
© External Synchronism
The followings make the signals necessary for external
synchronism; 0408, 0409, 0410,0411, 0413, 0414, 1C411,
1C412, 1C413 and1C415.
The 0408, 0409, 0410, 0411, 0413 and 0414 execute the
synchronizing separation of the external SYNC signal, and
the 1C412 and1IC413 produce the VD and HD pulses. The VD
pulse resets the SYNC signal generator (IC406), and the HD
pulse executes the phase comparison at the HD output of
the SYNC signal generator (IC406) and the IC411.
The phase comparison output is smoothed by the LPF and
becomes the oscillation frequency control input of the LC-
31 board.
@ External Synchronism Horizontal Phase Adjustment
The IC 412 and1C416 adjust the horizontal phase at external
synchronism. The microcomputer on the FC-30 board
executes the adjustment operated by the SW701 and
SW702 onthe CB-31 board.
V SUB Voltage Supply / CCD IRIS Circuit
This circuit supplies the specified voltage to the overflow
drain ofthe CCD imager. The Q401 and 0402 are regulators
whose standard voltage is V SUB control voltage.
The 12 Ch D/A converter (1C504) output on the FC-30 board
sets the V SUB control voltage so that the overflow drain
voltage of the CCD imager is the standard voltage. The
1C408 produces the charge discard pulse for shutter speed
control from the CCD IRIS control signal produced by the
FC-30 board and from the X SUB signal output by the
IC405.
© IRIS/AGC
The output for the IRIS detection is output from the IC401
4 PIN to the H-30 board as the video signal (No SYNC
signal).
The circuit centering on the Q405 is the AGC detection
circuit, and composes the AGC group with the operational
amplifier inside the 1C401.
3-2
3-3. PR-32 BOARD
The luminance signal (Y output) and the clamp pulse (CLP
3) from the TG-31 board gothrough the DC restorers of the
Q303 and Q304, and the signal undergoes gamma
compensation at the 0301, 0302, and IC301 (1/2). The
RV301 is a variable resistor for gamma adjustment. Next,
they go through the trap circuit of 14 [MHz] (CT301 is a
variable capacitor for 14 [MHz] trap adjustment) andIC301
(2/2), and are input to the IC330 (encoder) @3 PIN.
Then they go through the delay line FL301 to make the
aperture compensation signal, and are input to the @ PIN.
The level of this signal is adjusted by the voltage of the
1C330 @6 PIN. For a low luminance subject, the voltage of
the @8 PIN is raised by the AGC CONT voltage to decrease
the H aperture compensation signal and noise.
The blanking signal and the sync signal are supplied to the
1C330. Also, the voltage of the AGC CONT, Y ievel (IC330
@0 PIN), and the setup (IC330 @ PIN) are in the memory of
the IC505/FC-30 board.
The !C330 @ PIN is the output of the composite video
signal and is supplied and output to the IC360.
3-4. FC-30 BOARD
This board deal with the function system
@ Electronic Shutter/CCD IRIS Circuit
In the electronic shutter circuit, the microcomputer IC505
reads the setting of the SW501 (10 position rotary switch),
and outputs the EDO, ED1, ED2 and SMD2 signals to the
1C405 on the TG-31 board through the MB-31 board.
Inthe CCD IRIS circuit, the microcomputer IC505 changes
the electronic-shutter speed automatically and
successively according to the subject illumination. The
1C508, IC509, 1C510, Q509 and Q510 produce a saw-tooth
wave of 1 field period. On the other hand, the |C505 of TG-
31 board produces the shutter-speed-control voltage based
on the IRIS signal of the 1C401 of TG-31 board. The IC502
compares the both signals, produces the SWND signal
whose pulse length accords with the subject illumination,
and outputs it to the TG-31 board.
@ Microcomputer Circuit
The microcomputer circuit deals with the adjustment of
the signal process system in addition to the above @ and
@ functions.
The IC504 is the 12Ch D/A converters (Electronic volumes),
and output the 12Ch analog voltage respectively according
to the data set by the IC505. The IC505 is connected with
the adjustment fixture by the CN502, then the data specified
by the fixture is set into the IC504 through the IC505 so that
they output the analog voltage for adjustment.

3-5. MB-31 BOARD
This board has the DC/DC converter which supplies the DC
power necessary for each board, the overlay SYNC signal
separation circuit, the external SYNC signal selection circuit,
and the overlay power supply regulator circuit.
The circuit centering on the Q201 and Q202 is the overlay
SYNC signal separation circuit. The signal output from this
circuit and the external SYNC signal input from the CN703
on the CB-31 board are sent to the C201. The IC201 selects
the external SYNC signal according to the SW706 on the
CB-31 board. The Q203, Q204 and Q603 on the H board
compose the regulator of the overlay power supply.
Also, this board functions as a relay board between boards.
3-6. H BOARD
This board has the regulator for the power supply overlay,
the power supply regulator and connector for the automatic
iris lens.
3-7. CB-31 BOARD
This board has various input or output connectors and
control switches.
SSC-M370/M370CE

SSC-M370/M370CE
SECTION 4
ADJUSTMENT
4-1. PREPARATION
4-1-1, Adjustment Fixture and Equipment
e Light source for test chart AC 90 ~ 240 V
SZ
J-6026-130-B
e For video level and gamma adjustment
Gray Scale Chart
J-6024-340-B Siemens Star Chart
e For back forcus adjustment
J-6095-340-A
EVR Adjustment Fixture

SSC-M370/M370CE
Commercial measuring equipment and fixture
Dual Trace Oscilloscope
Waveform Monitor (WFM)
Digital Voltmeter
Color Monitor
Lens ('/2 inch C mount and manual iris type)
Lens mount surface
: Ze
—
a: should be under 9 mm
e ND Filter
ND 25 (25%) 50 mm Square made by Kenko
ND 0.3 (0.3%) 50 mm Square made by Kenko
a3
4-1-2. Connection for Adjustment
VCO Adjust
(1) only
VIDEO
SIGNAL
Pattern box
2
PTB-500 -
SSC-M370/M370CE >
CAMERA
COMM
DC IN. VS IN.
VIDEO OUT
(MODE: B)
Waveform monitor
(WFM)
B/W monitor
75Q
termination
Note:
To adjust exactly, use the manual iris lens of a C mount
type.

4-2. MECHANICAL BACK FOCUS
ADJUSTMENT
Subject: Siemens Star chart
Lens iris: Open
Equipment: B/W monitor
Test point: VIDEO OUT
Adjust:
1. Set the zoom control at TELE so as to obtain the
maximum multiplication factor. Optically focus the
image so as to obtain the maximum resolution.
2. Set the zoom contro! at WIDE so as to obtain the
minimum multiplication factor. Do not optically focus
the image at this time.
Check whether the image is focused, on the monitor
while turning the zoom control from TELE to WIDE.
If the image is not focused, properly set at back focus
as follows.
3. When the zooming mechanism is set at WIDE, turn the
back focus adjusting screw.
4. Repeat step 1 through 3 several times.
Monitor picture
(TELE) (WIDE)
CAMERA
a
BACK FOCUS
adjusting screw
Lens mount
(C mount)
4-3
SSC-M370/M370CE
4-3. VCO ADJUSTMENT
4-3-1. VCO Adjustment (1)
Object: Close ‘C’
Equipment: Oscilloscope (DC 500 mV 0.2 yS)
Measurement point: TG-31 Board IC411 1 pin
Adjustment point: LC-31 Board CT801
Specification: 2.9 +0.1 V
Adjustment method: Perform adjustment after
inputting the external sync
singnal to the VS IN.
LC-31 Board
CT301
4-3-2. VCO Adjustment (2) [SSC-M370CE only]
Object: Close ‘C’
Equipment: Oscilloscope (DC 500 mV 0.2 uS)
Measurement point: TG-31 Board C453
Adjustment point: TG-31 Board CT451
Specification: 4.1 +0.1 V
Adjustment method: Remove the FC-30 Board before
adjustment
LC-31
—A SIDE-
TG-31 Board

SSC-M370/M370CE
4-4. SIGNAL PROCESS ADJUSTMENT
[EVR Adjustment Fixture]
The SSC-M370/M370CE adjusts electricity for signal
process by the EVR (Electric volume).
The special EVR adjustment fixture is required for the
adjustment. The adjustment data is varied by the fixture,
and the values are written into the memory of camera.
e Procedure
1) Set the MAIN POWER and SUB POWER switches of the
EVR adjustment fixture to OFF, and connect the
connector of the fixture to the CN502 of the FC-30
board.
Connector of the EVR
adjustment fixture
FC-30 Board
2) Set the MAIN POWER switch of the fixture to ON, and
thenset the camera power to ON. The STEP value of the
fixture becomes ‘‘00”.
4-4
3) Setthe SUB POWER switch of the fixture to ON, andthe
STEP value becomes ‘'01” and the fixture is in the
adjustment mode. The STEP value is varied by operating
the STEP UP and STEP DOWN buttons. After the value
comes to “14”, it returns to “01”.
4) The adjustment is executed by operating the RV1—RV4
with the STEP value in accord with the adjustment item
number. During the process, the adjustment data is
shown in the STEP indicator in hexadecimal code.
5) By setting the SUB POWER switch to OFF after the
adjustment, the adjustment data is written in the camera
memory.
The data cannot be written, if the MAIN POWER switch
or camera power switch to OFF before SUB POWER
switch to OFF.
[Adjustment Location]
TP402 5
@ TP4O01
TG-31 Board -ASIDE-
TP301
PR-32 Board -ASIDE-
- CT301
Zirve01
PR-32 Board - B SIDE —
@TP601
H-30 Board
BI-32 Board ees
- ASIDE -

4-4-1. PGLL Adjustment
STEP No.: “01”
Object: Close ‘C’
Equipment: Oscilloscope (DC500 mV 0.2 uS)
Measurement point: TG-31 Board TP402
Adjustment point: JIG (RV1)
Specification:Set point +0.15 V
Adjustment method: Referring to the chart, adjust to the
voltage set point in accordance with the mark of the
PGLL voltage (left figure of the two) posted on the
metallic bar of the front block.(See page 2-4)
*MARK (L) PGLL (V)
*MARK (L):Left figure of the two
4-4-2. VSUB voltage Adjustment
STEP No.: “02”
Object:Close ‘C’
Equipment: Oscilloscope (DC 2.0 V 1mS)
Measurement point: TG-31 Board TP401
Adjustment point: JIG (RV1)
Specification:Set point +0.15 V
Adjustment method: Referring to the chart, adjust to the
voltage set point in accordance with the mark of the
VSUB voltage (right figure of the two) posted on the
metallic bar of the front block. (See page 2-4)
*MARK (R) *MARK (R) VSUB(V)
*MARK (R): Right figureof the two
4-5
| SSC-M370/M370CE
4-4-3. GAIN 0 dB Adjustment
(1)
STEP No.: “03”
Object: Grayscale chart
Equipment: Oscilloscope (AC 50 mV 10 pS)
Measurement point: BI-32 Board CN101 1pin (GND: 2 pin)
Adjustment point: Lens iris
Specification: A=200 +20 mV
(2)
STEP No.: “03”
Object: Grayscale chart
Equipment: Oscilloscope (AC 100 mV 10 u:S)
Measurement point: PR-32 Board TP301
Adjustment point: JIG (RV1)
Specification: A=500 +30 mV
4-4-4. Auto lris Video Level Adjustment
STEP No.: “04”
Object: Grayscale chart
Equipment: Oscilloscope (AC 100 mV 10uS)
Measurement point: H-30 Board TP601
Adjustment point: JIG (RV1)
Specification: 700 +50 mV

SSC-M370/M370CE
4-4-5. Pedestal Y GAIN Adjustment
STEP No.: “07”
Object: Grayscale chart
Equipment: Waveform monitor
Adjustment point: JIG (RV1/RV2)
Measurement point: VIDEO OUT
Adjustment method:
Adjust the levels covering the front block with
something (for example, a black cloth) to protect the
CCD device from a light leak.
1) Put the lens cap over the lens. (Do not move the
iris.)
2) Adjust the RV2 so that the pedestal level equals
the adjustment value A.
3) Remove the lens cap from the lens.
4) Adjust the RV1 so that the white level equals the
adjustment value B.
5) Make certain that the SYNC and gamma levels
are in the range of C and D respectively.
When the gamma level is outside the range D,
adjust the RV301/PR-32 board (Side B).
6) Adjust the CT301/PR-32 board (Side B) to minimize
the carrier amplitude of the wave form.
A
B
D
Minimum
Cc
[EIA] {CCIR]
A=7.0+0.5 IRE A = 29 +10 mV
B= 100 +2 IRE B = 700 +15 mV
C=40+41RE C =300 + 30 mV
D=50 +5 IRE D = 350 + 35 mV
4-6
4-4-6. AGC MAX Adjustment
STEP No.: “08”
Object: Grayscale chart
Equipment: Waveform monitor
Adjustment point: JIG (RV1)
Measurement point: VIDEO OUT
Specification: A = 30 + 2 IRE [EIA]
A= 210 + 15 mV [CCIR]
Adjustment method: Adjust the levels covering the front
block with something (for example, a black cloth) to
protect the CCD device from a light leak.
Install the ND filter (0.3%) to the lens before adjustment.
4-4-7. AGC Set Adjustment
STEP No.: “09”
Object: Grayscale chart
Equipment: Waveform monitor
Adjustment point: JIG (RV1)
Measurement point: VIDEO OUT
Specification: A = 90 + 5 IRE [EIA]
A = 630 + 35 mV [CCIR]
Adjustment method: Install the ND filter (25%) to the lens
before adjustment.
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