GW Instek APS-1102 User Manual - Manual (Page 43)

3.3 I/O Terminals
APS-1102 Programmable AC/DC Power Source 3-13
3.3.4 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-R (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 500 Hz
Gain setting range: 100 V range: 0.0 to 200.0 times (initial value is 100.0)
200 V range: 0.0 to 400.0 times (initial value is 200.0)
Gain setting resolution: 0.1
Gain accuracy: ±5% (50 Hz, when gain is at initial value with rated voltage
output)
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
External signal input/
external sync signal input
terminal
Figure 3-9. EXT SIG IN/EXT SYNC IN Terminal