GW Instek GBM-3080, User Manual

Page: 99 / 184

OTHER FUNCTIONS
99
User internal power
When using internal power as power source, please connect p17 to
VCC (5V) and device p16 and 18 to GND ends.
The internal power is 5V and 1A at maximum.
Note

In the case of unknown or uncertain power, the
internal power cannot be used; otherwise the
device will not work normally.
 In the case of application of low-power, you can
use the internal power supply to work, but it may
make worse the ability of anti-interference of
device.
Electrical parameters

Power Requirements: + 3.3V ~ 30VDC

Output signal: output with built-in pull-up
Darlington pair collector resistor. It is isolated
with opt coupler and effective in low voltage
level.

Maximum voltage: 30VDC with built-in 30V
clamping circuit.

Input signal: It is isolated with opt coupler and
effective in low voltage level.

Maximum current: 50mA
Note
 To avoid damaging the interface, the voltage of
power supply voltage can’t exceed the power
requirements.
 To avoid damaging the interface, please connect
cable after the device is powered off.
 The device uses output terminal derived by
Darlington. It can drive small power relays and
signal relays. The internal of device is integrated as
reversed diode.