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1 -5. NOTES
1 . Perform the adjustment after aging for ten minutes or
more.
2. As a rule, perform the adjustment in the order as shown
in the section 1 -8.
3. Set the line select switch of the vectorscope to +V.
1 -6. STANDARD SETTING
1 . Use the 5, 1 OOK viewer for a subject.
2. Set to about 70 cm the distance from subject and adjust
with the power zoom buttons so that each picture frame
size becomes as shown below when performing the
adjustment with the gray scale and the color bar.
3. Operate the power zoom buttons so that the viewer
without chart is monitored on the whole screen when
performing the adjustment with the all white pattern.
4. Connect the equipment.
Gray scale
Color bar
35 µ sec
48 µ sec
- 5-3 -
1 -7. ADJUSTMENT CONTROLLER
For this camera, the semi-fixed resistors used formerly
decrease to four and the EVR (electronic volume) IC is used
instead. The EVR IC incorporates the non-volatile memory
and the 8 bits D/A converter of 1 2 channels.
The adjustment controller performs the following communi
cations with EVR IC.
They are channel designation, up/down of data (8 bits,
255), reading out of the data written in the memory and
writing of the data to the memory, etc.
These operations can be performed by the key operations
of the adjustment controller.
Use the adjustment controller as described below.
CD
Connecting method
Turn off the power supply of the AC adaptor, then
connect test pin array J9001 of C P2 board to the
adjustment controller using the J-9 circuit board
connecting tool. (Refer to 1 -4.)
@
Power supply
Use the DC regulated power supply for the power supply
of the adjustment controller and connect 6 to 8 VDC to
the pin jack.
Turn on/off the power supply of camera and the power
•
supply of the adjustment controller at the same time.
® Test pin array
Due to its small size, connect test pin array J9001 of CP2
board to the adjustment controller using the J-9 circuit
board connecting tool. The J-9 relay board is, as the
J9001 , also located in the test pin array.
@
Relatlon between the adjusting data value and EVR
IC output voltage
When setting the adjusting data value as N , and EVR IC
output voltage as V (N), the following formula is obtained.
V (N) :; 0.5 + 3N/255
(Example): V (0) :; 0.5 volt, V (1 28)
® Note on using the adjustment controller
V (255) :; 3.5 volt
The correct adjusting data may be deleted by mis
operation of the adjustment controller. The following
three items are recommended to prevent this.
1 . Before performing the adjustment, note after reading
out the adjusting data (0 to 255) of each channel.
2. Note the new adjusting data every time an adjustment
of item completes.
3. Send each data to the D/A converter of each channel
by pressing AID+SEND and AID+WRT after setting
the data of all adjusting items and store each into the
memory to finish the adjustment.
(Refer to VJB-01 03 Adjustment controller Instruction
Manual.)
o
to
�
2.0 volt,
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