2-5
300 mV
±
30 mV
(1). FSC Adjustment
Test Point:
Pin 3 of IC5 (28MHz)
Sensor Board
8
Confirm that the Synchronization Mode Selector (on the
SW Board SW1) is set to INT Position.
8
Connect the Frequency Counter to Pin 3 of IC5.
8
Adjust data with the ARROW keys so that the Subcurrier
Frequency becomes 28.63636 MHz ± 40 Hz.
8
Press the ENTER key for next adjustment.
(3). ALC Level Adjustment
Test Point:
Pin 1 of CN2 (CDS OUT)
Sensor Board
8
Keep the Color Temperature at 3 200°K.
8
Aim the Camera at the Logarithmic Gray Scale Chart.
8
Connect the Oscilloscope to Pin 1 of CN2.
8
Adjust data with the ARROW keys so that the CDS OUT
signal level becomes 300 mV ± 30 mV as shown in Fig.
4-2.
Fig. 4-2
8
Press the ENTER key for next adjustment.
(4). AGC OFF Gain Adjustment
Test Point:
Pin 3 of CN2 (AGC OUT)
Sensor Board
8
Keep the Color Temperature at 3 200°K.
8
Aim the Camera at the Logarithmic Gray Scale Chart.
8
Connect the Oscilloscope to Pin 3 of CN2.
8
Adjust data with the ARROW keys so that the AGC OUT
signal level becomes 300 mV ± 30 mV as shown in Fig.
4-3.
300 mV
±
30 mV
Fig. 4-3
8
Press the ENTER key for next adjustment.
(5.1). OB Level Adjustment
Test Point:
Video Output Connector
8
Connect the terminated Oscilloscope with 75
Ω
to Video
Output Connector.
8
Adjust data with the ARROW keys so that the Pedestal
level becomes 50 mV ± 10 mV as shown in Fig. 4-4.
Fig. 4-4
8
Press the ENTER key for next adjustment.
(5.2). Video Output Gain Adjustment
Test Point:
Video Output Connector
8
Keep the Color Temperature at 3 200°K.
8
Aim the Camera at the Logarithmic Gray Scale Chart.
8
Connect the terminated Oscilloscope with 75
Ω
to Video
Output Connector.
8
Adjust data with the ARROW keys so that the Video sig-
nal level becomes 714 mV ± 50 mV as shown in Fig. 4-5.
714 mV
±
50 mV
50 mV
±
10 mV
Fig. 4-5
8
Press the ENTER key for next adjustment.
(5.3). OB Confirmation (Don't Change Data)
8
Press the ENTER key for next adjustment.
