ViewSonic VP2030b-1 Service Manual page 19

3.4 Signal level and input impedance
3.4.1 Video Signal level: 0.7Vp-p Video signal.
3.4.2 Sync Signal level
H/V Separate: TTL level
3.4.3 Input impedance
Analog video input: 75 ohm
Digital video input: 100 ohm
Sync input: > 1 k ohm
4. SIGNAL CABLE: Signal cable with Mini D-Sub 15P connectors at both ends. Length: 1.8 meter.
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