GW Instek APS-1102A User Manual - Manual (Page 49)

3 PANEL AND BASIC OPERATIONS
APS-1102A 3-15
3.3.5 External signal input/external sync signal input terminal
When using an externally input signal as the signal source with external synchronization, connect to the
external signal input/external sync signal input terminals (EXT SIG IN/EXT SYNC IN) on the rear panel.
For this connection, use a coaxial cable with a BNC connector.
The specifications for these external signal input/external sync signal input terminals are listed below.

Common specifications
Input terminal: BNC connector (used for external signal input and external
sync signal input)
Input impedance: 10 kΩ
Non-destructive maximum input voltage:

10 V

External signal input
Frequency range: DC to 550 Hz (sine wave)
DC to 100 Hz (other than sine wave)
Gain setting range: 100 V range: 0.0 times to 220.0 times (initial value is 100.0)
200 V range: 0.0 times to 440.0 times (initial value is 200.0)
Gain setting resolution: 0.1 times
Gain accuracy:

5% (DC or 45 Hz to 65 Hz, gain is at initial value, with
rated voltage output, no load)
Phase between input and output: In-phase
Input voltage range:

2.2 V to +2.2 V

External synchronization
Synchronization frequency range: 40 Hz to 500 Hz

External sync signal is not required when line
synchronization is selected.
Input voltage threshold value: TTL
Minimum pulse width 3 ms
External signal input/
external sync signal input
terminal
Figure 3-10. EXT SIG IN/EXT SYNC IN Terminal