Remote Control Operation - Extech Instruments 382290 User Manual

Remote Control Operation

Note: You can use the voltage and current remote control at the same time or separately.
Voltage and Current can be controlled by either a 0 to 5V external voltage source or a 5kΩ
variable resistor.
WARNING: The voltage and current remote control must NOT share a common ground.
Connector Plug Assembly for Voltage Remote Control
Set up the provided remote connector plug:
1. Unscrew (counter-clockwise) the black housing to separate
and expose the connection terminals
2. Solder 3 wires (22AWG) to terminals 1, 2 and 3
3. Reassemble the housing
4. Insure that the unit under test is disconnected and the power
supply is off
5. Plug the remote connector plug into the remote control
terminal on the back of the power supply
6. Secure the plug by locking the connector ring
Voltage Remote Control using a Voltage Source
A variable voltage source of 0 to 5V is fed into the remote terminal to
adjust the output level
WARNING: If the input is higher than 5V, the Over Voltage Protection will be triggered
1. Ensure that the load is disconnected and the power supply is off
2. Connect the wire from terminal 2 to the positive (+) side of the external voltage
source
3. Connect the wire from terminal 3 to the negative (-) side of the external voltage
source. Note: the wire from terminal 1 is not used in this method.
4. Turn the Voltage Remote Control On/Off switch to the On position
5. Switch the power supply on
6. Vary the external input voltage from 0 to 5V to check and verify the full output
voltage range of the power supply
7. Switch off the power supply
Voltage Remote Control using a 5kΩ variable resistor
1. Ensure that the load is disconnected and the power supply is off
2. Connect the wires from terminals 1, 2 and 3 as shown in the drawing
3. Turn the Voltage Remote Control On/Off switch to the On position
4. Switch the power supply on
5. Adjust the 5kΩ variable resistor to check and verify the full output voltage range of
the power supply
6. Switch off the power supply
4
382290 V1.1 7/07