SERVICE MANUAL
COLOR VIDEO CAMERA
TK-C400U/TK-C400E/TK-C401EG
TK-C400U/E
COPYRIGHT © 1997 VICTOR COMPANY OF JAPAN, LTD.
(Lens is optional)
TK-C401EG
No. 6675
November 1997
TABLE OF CONTENTS
Section Title PageSection Title Page
IMPORTANT SAFETY PRECAUTIONS
INSTRUCTIONS
1. SERVICE CAUTIONS AND DISASSEMBLY
1.1 REPLACEMENT OF FUSE ......................................... 1-1
1.2 CARD FIT CABLE .......................................................1-1
1.3 REMOVAL OF CIRCUIT BOARDS ............................. 1-1
REPLACEMENT OF COLOR CCD IMAGE SENSOR ..........
1.4
1.4.1 Removing of CCD image sensor ....................... 1-3
1.4.2 Installing of CCD image sensor ......................... 1-4
2. ELECTRICAL ADJUSTMENTS
2.1 REQUIRED MEASURING INSTRUMENTS FOR
ADJUSTMENTS ......................................................... 2-1
2.1.1 Required measuring instruments for
adjustments ...................................................... 2-1
2.1.2 Applicable lens for adjustments ........................2-1
2.1.3 Required system for adjustments ..................... 2-2
2.1.4 Required instruments for adjustment ............... 2-2
2.2 STANDARD SETUP .................................................... 2-3
2.3 SWITCH SETTING FOR ADJUSTMENT ..................... 2-3
2.4 NOTES ....................................................................... 2-4
2.4.1 Installation ......................................................... 2-4
2.4.2 How to adjusting the EVR .................................2-4
2.4.3 What is “Initial Data” ........................................ 2-4
2.4.4 How to write adjusted data to EEPROM in
camera .............................................................. 2-4
2.5 INITIALIZE ..................................................................2-5
2.6 ADJUSTMENT OF SSG ............................................. 2-5
2.7 ADJUSTMENT OF CCD ............................................. 2-6
2.8 ADJUSTMENT OF VIDEO SIGNAL ............................2-7
2.9 ADJUSTMENT OF WHITE BALANCE ........................ 2-9
2.10 ADJUSTMENT OF CHROMA SIGNAL ..................... 2-12
2.11 WRITE DATA ...........................................................2-12
1-3
4. EXPLODED VIEW AND ASSEMBLY PARTS LIST
4.1 ASSEMBLY ................................................................ 4-1
5. ELECTRICAL PARTS LIST
5.1 CCD BOARD ASSEMBLY PARTS LIST 01 ................ 5-2
5.2 PRO BOARD ASSEMBLY PARTS LIST 02 ................ 5-2
5.3 EE BOARD ASSEMBLY PARTS LIST 03 ................... 5-5
5.4 TERMINAL BOARD ASSEMBLY PARTS LIST 04...... 5-5
5.5 PS BOARD ASSEMBLY PARTS LIST 05 ................... 5-6
5.6 POWER BOARD ASSEMBLY PARTS LIST 06 .......... 5-7
6. PACKING ........................................................................6-1
3. CHARTS AND DIAGRAMS
3.1 BLOCK DIAGRAM ..................................................... 3-2
3.2 CCD BOARD SCHEMATIC DIAGRAM ....................... 3-3
3.3 CCD CIRCUIT BOARD ............................................... 3-3
3.4 PRO BOARD SCHEMATIC DIAGRAM ....................... 3-4
3.5 PRO CIRCUIT BOARD ............................................... 3-5
3.6 EE BOARD SCHEMATIC DIAGRAM .......................... 3-6
3.7 EE CIRCUIT BOARD .................................................. 3-7
3.8 TERMINAL BOARD SCHEMATIC DIAGRAM ............ 3-7
3.9 TERMINAL CIRCUIT BOARD ..................................... 3-7
3.10 PS BOARD SCHEMATIC DIAGRAM
(TK-C400U/TK-C400E) ................................................ 3-8
3.11 PS CIRCUIT BOARD (TK-C400U/TK-C400E) .............. 3-8
3.12 POWER BOARD SCHEMATIC DIAGRAM
(TK-C401G) .................................................................3-8
3.13 POWER CIRCUIT BOARD (TK-C401G) ...................... 3-8
3.14 BLOCK DIAGRAM of IC’S
Important Safety Precautions
Connector
Metal sleeve
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes
of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the
following precautions when a set is being serviced.
Precautions during Servicing
1. Locations requiring special caution are denoted by labels and
inscriptions on the cabinet, chassis and certain parts of the
product. When performing service, be sure to read and comply with these and other cautionary notices appearing in the
operation and service manuals.
2. Parts identified by the
critical for safety.
Replace only with specified part numbers.
Note: Parts in this category also include those specified to com-
ply with X-ray emission standards for products using
cathode ray tubes and those specified for compliance
with various regulations regarding spurious radiation
emission.
3. Fuse replacement caution notice.
Caution for continued protection against fire hazard.
Replace only with same type and rated fuse(s) as specified.
4. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
5. Use specified insulating materials for hazardous live parts.
Note especially:
1) Insulation Tape 3) Spacers 5) Barrier
2) PVC tubing 4) Insulation sheets for transistors
6. When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.
symbol and shaded ( ) parts are
12. Crimp type wire connector
In such cases as when replacing the power transformer in sets
where the connections between the power cord and power
transformer primary lead wires are performed using crimp type
connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely
according to the following steps.
1) Connector part number : E03830-001
2) Required tool : Connector crimping tool of the proper type
which will not damage insulated parts.
3) Replacement procedure
(1) Remove the old connector by cutting the wires at a point
close to the connector.
Important : Do not reuse a connector (discard it).
cut close to connector
Fig.3
(2) Strip about 15 mm of the insulation from the ends of
the wires. If the wires are stranded, twist the strands to
avoid frayed conductors.
15 mm
7. Observe that wires do not contact heat producing parts
8. Check that replaced wires do not contact sharp edged or
9. When a power cord has been replaced, check that 10-15 kg of
10. Also check areas surrounding repaired locations.
11. Products using cathode ray tubes (CRTs)
Fig.1
(heatsinks, oxide metal film resistors, fusible resistors, etc.)
pointed parts.
force in any direction will not loosen it.
Power cord
Fig.2
In regard to such products, the cathode ray tubes themselves,
the high voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray emission.
Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts.
Under no circumstances attempt to modify these circuits.
Unauthorized modification can increase the high voltage value
and cause X-ray emission from the cathode ray tube.
Fig.4
(3) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Fig.5
(4) As shown in Fig.6, use the crimping tool to crimp the
metal sleeve at the center position. Be sure to crimp fully
to the complete closure of the tool.
1.25
2.0
5.5
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Fig.7
Crimping tool
Crimped at approx. center
of metal sleeve
Conductors extended
1
p
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance or greater between power cord plug prongs and
externally exposed parts of the set (RF terminals, antenna terminals, video and audio input
and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
2. Dielectric strength test
Confirm specified dielectric strength or greater between power cord plug prongs and exposed
accessible parts of the set (RF terminals, antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
3. Clearance distance
When replacing primary circuit components, confirm specified clearance distance (d), (d’) between soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
Chassis
Fig. 8
4. Leakage current test
Confirm specified or lower leakage current between earth ground/power cord plug prongs
and externally exposed accessible parts (RF terminals, antenna terminals, video and audio
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
5. Grounding (Class 1 model only)
Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in,
Video out, Audio in, Audio out or Fixing screw etc.).
Measuring Method:
Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.
AC inlet
Earth pin
Exposed accessible part
Grounding Specifications
Region
USA & Canada
Europe & Australia
Externally
exposed
accessible
Grounding Impedance (Z)
d
d'
art
≤
Z 0.1 ohm
≤
Z 0.5 ohm
Power cord,
primary wire
Z
V
Fig. 9
ab
c
A
Milli ohm meter
Fig. 10
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
Region
Japan R 1 MΩ/500 V DC
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region Load Z
Japan
USA & Canada
Europe & Australia
Table 2 Leakage current specifications for each region
Insulation Resistance (R)
≤
–
≤
Table 1 Specifications for each region
1 kΩ
0.15 µF
1.5 kΩ
2 kΩ
50 kΩ
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 900 V 1 minute
AC 3 kV 1 minute
AC 1.5 kV 1 minute
i 1 mA rms Exposed accessible parts
i 0.5 mA rms
i 0.7 mA peak
i 2 mA dc
i 0.7 mA peak
i 2 mA dc
≤
≤
≤
≤
≤
≤
(Class 2)
(Class 1)
Clearance Distance (d), (d')
≤
d, d' 3 mm
≤
d, d' 4 mm
≤
d, d' 3.2 mm
≤
d 4 mm
≤
d' 8 mm (Power cord)
≤
d' 6 mm (Primary wire)
a, b, cLeakage Current (i)AC Line Voltage
Exposed accessible parts
Antenna earth terminals
Other terminals
2
SECTION 1
B
B
2
2
TK-C401TK-C400
SERVICE CAUTIONS AND DISASSEMBLY
1.1 REPLACEMENT OF FUSE
Before replacing the fuse, the reason why it blew should be
investigated to prevent trouble from spreading. The malfunction should be repaired before replacing the fuse.
When replacing the fuse, make sure to disconnect the power
supply from the camera beforehand and to replace it with new
one of the specified part number for safety and protection of
the set.
1) Remove two screws 1, and then open the rear panel A and
escutcheon B.
1
1
2) Then, a fuse F1 on the PS/POWER board is exposed.
PS board
A
Fig. 1-1
F1
1
B
POWER board
1
TK-C401TK-C400
B
1.2 CARD FIT CABLE
Pay careful attention to the connecting side of the card fit cable. When connecting it, insert it so as to contact the copper
leaf on its edge to the connector's conductive surface as shown
in Fig. 1-3.
When disconnecting the card fit cable, pull the cable stoppers
in the direction of the arrows. To secure the connection, push
the cable stoppers in the reverse direction of the arrows after
inserting the cable.
A
Fig. 1-3
1.3 REMOVAL OF CIRCUIT BOARDS
1) Remove three screws 2 and then detach the bottom cover
B.
TK-C400
When replacing a fuse, make sure to use new one of the specified part number for safety and protection of the set.
Symbol
No.
!F1 1A-125V QMF51U1-1R0 TK-C400U
!F1 T1A-250V QMF51E2-1R0 TK-C400E
!F1 T2A-250V QMF51E2-2R0 TK-C401EG
Rating Parts No. Note
TK-C401
Fig. 1-2
Fig. 1-4
1-1
2) Remove two screws 3.
5) Disconnect a connector F, then remove the EE board.
3
PRO board
D
C
Fig. 1-5 Removal of PRO board
3) Disconnect the connector C and D, and then remove the
PRO board.
F
Fig. 1-7
6) Remove a screw 5, then remove the TERMINAL board with
rear panel G.
In case of TK-C401, remove a screw 6 and connector H
before removing the TERMINAL board.
4) Remove a screw 4 and disconnect a connector E, then lift
the EE board.
EE board
E
4
Fig. 1-6 Removal of EE board
G
G
55
TK-C400 TK-C401
Fig. 1-8 Removal of TERMINAL board
TERMINAL board
6
G
1-2
H
Fig. 1-9 Removal of TERMINAL board (TK-C401)
7) Remove a screw 7, then slide the PS/POWER board in the
direction of arrow to remove it.
7
Fig. 1-10 Removal of PS/POWER board (1)
8) Remove two screws 8, then remove the heat sink J and
chassis K.
1.4 REPLACEMENT OF COLOR CCD IMAGE SENSOR
䡵 The CCD image sensor is not interchangeable with any-
thing other than the specified one.
䡵 Be careful in handling a new image sensor neither to leave
fingerprints on the glass surface nor to make it stained with
grease.
To clean dust and greasy stain, breathe out to mist the glass
surface and gently wipe it with cotton swab, etc. (Do not
use alcohol and the like.)
䡵 After replacement of the CCD image sensor, the camera
needs to undergo electrical adjustment.
䡵 The image sensor has a weak characteristic in electrostatic
destruction. When replacing, make sure of electrostatic
shielding of the CCD image sensor.
䡵 For a while after removing the image sensor, there are elec-
tric charge remaining at the circuit terminals. If a new image sensor is set into the socket in such a condition, it may
damage it in a moment because of stored electric charge.
When replacing the image sensor, wait a few (2 to 3) minutes after removing it before setting new one into the
socket.
PS/POWER board
8
J
K
Fig. 1-11 Removal of PS/POWER board (2)
1.4.1 Removing of CCD image sensor
1) Remove the bottom cover.
(See the subsection 1.3.1))
2) Disconnect the connector L.
L
Fig. 1-12
1-3
3) Remove two screws 9, then remove the front frame M.
9
1.4.2 Installing of CCD image sensor
Note:
Before installation, take notes of the code of the CCD
image sensor. It needs to refer to this code for adjustment.
1st. pin Index
V
RGL
code
V
SUB
code
M
Fig. 1-13
4) Remove two screws 10, and then the CCD board has removed with the CCD image sensor.
10
CCD board
Fig. 1-14
5) Detach the CCD image sensor and sensor holder N slowly
in the direction of the arrow.
ICX0**AK-
A
1) When installing the CCD image sensor, pay attention to its
orientation.
2) For installing a new CCD image sensor to the set, perform
reassembling parts in the reverse order of removing.
3) Adjust the V
SUB and VRGL voltage. (See subsection 2.7)
Fig. 1-15
1-4
N
CCD board
SECTION 2
ELECTRICAL ADJUSTMENTS
To change the setting of adjustment items, use a computer with the adjustment software to change the set value of the EVR for each
adjustment item as well as to store the changed data into the memory of the camera. If any of the following parts is replaced or the
camera needs to adjust settings of itself such as auto white balance, etc., it requires adjustment of the EVR with a computer.
• CCD board
IC 200 CCD Image sensor ICX 054AK-A: for TK-C400U
ICX 055AK-A: for TK-C400E/TK-C401EG
• PRO board
IC205 EEPROM AK6420AM
2.1 REQUIRED MEASURING INSTRUMENTS FOR ADJUSTMENTS
2.1.1 Required measuring instruments for adjustments
Instrument
Oscilloscope
Frequency counter
2.1.2 Applicable lens for adjustments
• Manual zoom
• Manual iris
• Filter diameter
The infinity adjustment lens (YTU92001B) is provided with five kinds of screw-in adapters that make it attachable to camera
lenses of five different filter sizes (∅=37, 43, 46, 49 and 52 mm, pitch=0.75 mm each). Use a camera lens whose filter size is any
of the above-mentioned diameters. If is desirable to use a zoom lens that covers the focal length of 20-40 mm (for to the 2/3-inch
image size) or so as an intermediate focal length of its zoom ratio.
• Recommended lens (example)
Capable of measuring 100MHz or
higher bands and calibrated.
Readable in 8 or more digits. Constancy
of 0.1 ppm/1 x 10-7 or more at 0°C to
40°C.
Condition
Focal point
Lens
Flange-back
Instrument
Vectorscope
Digital voltmeter
Lens
C mount lens
CS mount lens
Condition
Must be calibrated.
Input impedance of 10 M ohm or more,
and calibrated.
Flange back
17.526 mm
12.5 mm
Dimension L
10 mm or less
5.5 mm or less
MODEL J6 x 11-
Manufacture CANON FUJINON
Focal length 11.5 - 69 mm 12.5 - 75 m
Zoom ratio 6:1 6:1
Zoom operation Manual Manual
Iris range F1.4 to close F1.2 to close
Iris control Manual Manual
Mount C mount C mount
Filter diameter ∅46 mm P = 0.75 mm ∅52 mm P = 0.75 mm
Note: Set the camera’s back focus adjustment ring to the position appropriate for the camera lens to be used. (Refer to the instruc-
tions.)
22
2 (HZ-H8061) H6 x 12.5R
22
2-1
2.1.3 Required system for adjustments
Equipments Specifications
Computer 486DX4/100MHz or higher micro processor (Recommended Pentium Processor)
Operating system Windows 95 or Windows NT 3.51
Memory 16M Byte or more
FDD 3.5 inch (1.44 MB) floppy diskette drive
I/O port Serial port
Hard disk unit 1 MB hard disk space
2.1.4 Required instruments for adjustment
Program disk
(For IBM-PC)
PLSC1215
Infinity adjustment lens
YTU92001B
Light box
YTU93072
Lens*
(Ex: HZ-H8061)
Color bar chart
YTU92001-051
Interface cable
(For IBM-PC)
YTU93063
Gray scale chart
YTU92001-052
Color temp. Conversion filter* Waveform monitor (W.F.M.)*
(Example)
KODAK Wratten gelatin filter
• No. 80B + No. 80B (or equivalent)
• No. 80D + No. 82A (or equivalent)
• No. 81A + No. 81D (or equivalent)
Conversion cable
YTU94066
White balance chart
YTU92001-053
Note: Equipments marked with asterisk are not handled by parts department.
2-2
2.2 STANDARD SETUP
Supply power
AC 24V/DC 12V
TK-C400
REAR
PANEL
DC output
Interface
terminal
TK-C401EG
REAR
PANEL
75 ohm
terminator
Supply power
AC230V
Vetorscope Waveform
monitor (WFM)
Color monitor
75 ohm
terminator
Oscilloscope
PLSC1215
Computer
Windows 95 or NT
2.3 SWITCH SETTING FOR ADJUSTMENT
REAR PANEL
SW100
• SW100 (TERMINAL BOARD)
PHASE/W.B
LL/INT.
ATW/MANU
BLC ON/OFF
AES ON/OFF
AGC ON/OFF
VR500S500
W.B
INT
ATW
OFF
OFF
ON
2-3
2.4 NOTES
2.4.1 Installation
To install the adjustment program, perform the following procedure.
1) If you have any programs currently installed in the serial I/O
port, remove them.
2) Insert the adjustment program diskette into a floppy diskette
drive.
3) From Windows 95, select “Run” from the “Start” button
and type “a:\setup (or b:\setup)” depending on which drive
contains the diskette.
4) Follow the instructions on the screen.
2.4.2 How to adjusting the EVR
Click the “䊱” or “䊲” button to the right of the adjustment
items displayed on the screen to adjust EVR to the required
value.
2.4.3 What is “Initial Data”
The initial data loaded at “2.5 INITIALIZE” consists of preset
adjustment values. Therefore, once the adjustment procedure
is started, all adjustment should be done from beginning to the
end. Otherwise, the preset adjustment values would be written
as the adjustment data.
2.4.4 How to write adjusted data to EEPROM in camera
The adjustment values are written in the EEPROM of the camera when you click “YES” from the “Are you sure to write
EEPROM?” message box which is displayed at the end of the
adjustment.
These buttons
If you abort the adjustment in the middle, the adjustment
values in the camera are not changed (the adjustment values which have been set before the start of the adjustment
remain unchanged).
2-4
No.
Item Mode Adjustment procedure
2.5 INITIALIZE
Measuring
instrument &
Input signals
Measuring point (*)
Adjustment parts (-)
Adjustment level (+)
1) Select either “TK-C400U.cor” for TK-C400U
or “TK-C400E.cor” for TK-C400E/401EG to on
Scenario file define adjustment.
2) Selecting either “NEXT” or “BACK” button
to be initialized the camera data.
All EVR are installed the initial data. (See 2.4.3)
2.6 ADJUSTMENT OF SSG
1 fsc
adjustment
Frequency
counter
*
TP207 [PRO]
-
EVRUSR
[CAT: CLAMP, Byte: 5]
+
U-ver. 3.579545MHz
E-ver. 4.43361875MHz
1) Select the “NEXT” button to display “fsc ad-
justment” on the title bar.
2) Adjust the EVRUSR with “䊱” and “䊲” buttons
to obtain the specified level at the measuring
point.
2-5
Measuring
No.
Item Mode Adjustment procedure
instrument &
Input signals
2.7 ADJUSTMENT OF CCD
Measuring point (*)
Adjustment parts (-)
Adjustment level (+)
1 VSUB voltage
adjustment
2 Reset voltage
adjustment
Digital voltmeter *
Oscilloscope
(H-rate:10:1)
TP205 [PRO]
-
VSUB [CAT: DCREF,
Byte: 3]
+
Specified voltage on
the back of the CCD.
*
TP214 [PRO]
-
VRGL [CAT: DCREF,
Byte:4]
+
Specified voltage on
the back of the CCD.
1) Select the “NEXT” button to display “VSUB
voltage” on the title bar.
2) Adjust the VSUB with “䊱” and “䊲” buttons to
obtain the specified level at the measuring
point.
Note:
For the specified voltage, check on the VRGL
and VSUB codes shown on the back of the
CCD, and find out the proper value according to the correlation table of the “How to
Find Specified Voltage” as shown below.
1) Select the “NEXT” button to display “Reset
voltage” on the title bar.
2) Adjust the VRGL with “䊱” and “䊲 ” buttons to obtain the specified level at the measuring point.
How to Find Specified Voltage
Note:
For the specified voltage, check on the V
RGL
and VSUB codes shown on the back of the
CCD, and find out the proper value according to the correlation table of the “How to
Find Specified Voltage” appearing in the
lower part of this page.
2-6
Measuring
No.
Item Mode Adjustment procedure
instrument &
Input signals
2.8 ADJUSTMENT OF VIDEO SIGNAL
Measuring point (*)
Adjustment parts (-)
Adjustment level (+)
1 White clip
adjustment
2 Contour level
adjustment
Oscilloscope
(H-rate: 10:1) or
W.F.M.
Gray scale chart
(Just scan size)
Oscilloscope
(H-rate: 10:1) or
W.F.M.
Gray scale chart
(Just scan size)
LENS OPEN
*
VIDEO OUT (75 ohm
Termination)
-
DAVREFY
[CAT: DCREF, Byte: 1]
+
U-ver.
0.79 Vp-p (110 IRE)
E-ver.
0.77 Vp-p (110%)
*
VIDEO OUT (75 ohm
Termination)
-
LENS IRIS
+
U-ver.
0.57 Vp-p (80IRE)
E-ver.
0.56 Vp-p (80%)
1) Select the “NEXT” button to display “White
clip” on the title bar.
2) Turn the lens iris so that the wavefrom of
grayscele is saturated as shown left figure.
3) Adjust the DAVREFY with “䊱” and “䊲” buttons to obtain the specified level at the measuring point.
1) Select the “NEXT” button to display “Con-
tour level” on the title bar.
2) Adjust the lens iris to obtain the specified level
at the measuring point.
*
VIDEO OUT (75 ohm
Termination)
-
VHAPGH
[CAT: FIELD, Byte: 3]
+
U-ver.
0.714 Vp-p (100IRE)
E-ver.
0.7 Vp-p (100%)
3) Adjust the VHAPGH with “䊱” and “䊲” buttons to obtain the specified level at the measuring point.
2-7
No.
Measuring
Item Mode Adjustment procedure
instrument &
Input signals
Measuring point (*)
Adjustment parts (-)
Adjustment level (+)
3 Setup level
adjustment
4 Burst level
adjustment
Oscilloscope
(H-rate: 10:1) or
W.F.M.
Oscilloscope
(H-rate, 10:1) or
W.F.M.
*
VIDEO OUT
(75 ohm Termination)
-
SETUP
[CAT: Fix, Byte: 3]
50 mVp-p
+
*
VIDEO OUT
(75 ohm Termination)
-
DAVREFC
[CAT: DCREF, Byte: 2]
+
U-ver.
286 mVp-p (40IRE)
E-ver.
300 mVp-p
1) Select the “NEXT” button to display “Setup
level” on the title bar.
2) Turn the lens iris to be closed.
3) Adjust the SETUP with “䊱” and “䊲” buttons to obtain the specified level at the measuring point.
1) Select the “NEXT” button to display “Burst
level” on the title bar.
2) Adjust the DAVREFC with “䊱” and “䊲” buttons to obtain the specified level at the measuring point.
2-8
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