7-2
2-1-5. Input/Output Levels and Impedance
Video input:
LINE IN
EURO
Input signal: 1Vp-p, 75ohms, unbalanced,
sync negative
Video output: LINE OUT
EURO
Output signal: 1Vp-p, 75ohms, unbalanced,
sync negative
Audio input:
LINE IN
EURO
Input level: –7.5 dBs
(0dBs= 0.775Vrms)
Input impedance: more than 47 kilohms
Audio output: LINE OUT
EURO
Standard level: –7.5dBs at load impedance 47
kilohms
Output impedance: less than 10 kilohms
2-1-6. Adjustment Sequence
The adjustments should be performed in the following sequence.
2-2.
POWER SUPPLY CHECK
2-2-1. Output Voltage Check (MA-286 Board)
Mode
E-E
Measuring Instrument
Digital voltmeter
SW 12V Check
Measurement point
IC930 pin
2
Specified value
12.0 ± 0.3V
MTR12V Check
Measurement point
CN600 Pin
!™!£
Specified value
12.4 ± 0.5V
SW5V Check
Measurement point
CN600 Pin
!¶!•
Specified value
5.0 ± 0.5V
[Check Method]
1)
Each of these supply voltages must meet its specified value.
