NF DP060LM, Instruction Manual, Page: 287 / 307

11.23 External Signal Input
DP060LM/DP120LM/DP180LM
269
11.23 External Signal Input
The external signal input works differently depending on the selection of the signal source.
11.23.1 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 this product. When synchronizing with the power input
frequency, no signal input is needed.
All models Factory default
Synchronization signal source
switch External synchronization signal (EXT) or
Power input (LINE)
LINE
Synchronization frequency range 40 Hz to 500 Hz
Input terminal BNC connector (rear panel, unbalanced)
Input impedance
1 M

Threshold of input voltage TTL level
Minimum pulse width
500

s
Nondestructive maximum input
voltage

10 V
11.23.2 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) x Gain (Vpk/Vdc).
Example1 ） 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.
Example2 ） 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).
Specification Factory default
Gain setting range *59 100 V range: 0.0 to 227.0 times 100
200 V range: 0.0 to 454.0 times 200
Setting resolution *59 0.1
Gain accuracy *60 
5 %
Input terminal BNC connector (rear panel, unbalanced)
Also used as the external synchronization signal input
Input impedance
1 M

Input voltage range

2.2 V (A/D resolution 10 bit)
Nondestructive maximum input
voltage

10 V
*59
：
In the polyphase output, the setting is common to all the phases.
*60
：
In the DC mode (only in single-phase output) or 45 Hz to 65 Hz, factory default gain, rated output
voltage, and no load.