External Signal Input; External Synchronous Signal Input (Signal Source Sync Only); Voltage Setting Signal Input (Signal Source Vca Only) - NF DP Series Instruction Manual

10. Specifications

10.22 External Signal Input

The external signal input works differently depending on the selection of the signal source.

10.22.1 External Synchronous Signal Input (Signal Source SYNC only)

This is the signal to synchronize the frequency of the internal signal source with the one of the
external signal source.
When the signal source is SYNC, you can select whether to synchronize with this external signal
input or the power input frequency of the product. When synchronizing with the power input
frequency, no signal input is needed.
Synchronization signal source switch
Synchronization frequency range
Input terminal
Input impedance
Threshold of input voltage
Minimum pulse width
Nondestructive maximum input voltage

10.22.2 Voltage Setting Signal Input (Signal Source VCA only)

This is the signal to set the output voltage amplitude of the internal signal source (DC input).
Output voltage (Vpk) = Voltage setting signal (Vdc)  Gain (Vpk/Vdc)
Example 1) For the AC mode, signal source = VCA, the gain of 100.0, and the voltage setting
signal input of 1 Vdc, the output voltage is 100 Vpk.
Example 2) For the AC mode, signal source = VCA, the gain of 141.4, and the voltage setting
signal input of 1 Vdc, the output voltage is 141.4 Vpk (=100 Vrms).
Gain setting range
Setting resolution
Gain accuracy
Input terminal
Input impedance
Input voltage range
Nondestructive maximum input voltage
*69: In the polyphase model, polyphase system, and polyphase output of the Multi-phase model, the
setting is common to all the phases.
*70: DC or 45 Hz to 65 Hz, the gain is the factory default, the rated output voltage, no load.
292
All models
External synchronization signal (EXT)
or Power input (LINE)
40 Hz to 500 Hz
BNC connector (rear panel, unbalanced)
1 M
TTL level
500 s
10 V
All models
*69 100 V range: 0.0 to 227.0 times
200 V range: 0.0 to 454.0 times
*69 0.1
*70 5 %
BNC connector (rear panel, unbalanced)
Also used as the external synchronization signal input
1 M
2.2 V (A/D resolution 10 bit)
10 V
PROGRAMMABLE AC POWER SOURCE
Factory default
LINE
Factory default
100
200