User's Manual

Remote Operation
71
Initial Conditions
Immediately after power on from the factory, the power supply automatically undergoes a self-test and sets all parameters
to the values contained in Table 5-3. The values in the first part of the table come from storage register 0 and were stored at
the factory. They will remain until STO 0 is used to change settings of the power on state. When the power supply is again
turned on, it will initialize its outputs to the values in storage register 0.
Table 5-3. Initial Conditions
Parameter Inital Value
Voltage 0 V High Range
Current 10 mA High Range
Reprogramming Delay 20 mS
Store/Recall registers:
0-10: Voltage 0 V High Range
Current 10 mA High Range
Over Voltage (OV) 55 V (High Range)
Over Current Protection (OCP) Disabled
UNMASK register 0 (cleared)
SRQ 0 (Off)
Output Channels On
Front Panel Metering Output #1
Power Supply Address Last stored value (Factory set to 5)
Local Control Enabled
PON bit On
PON SRQ Off (0)
Cal Mode Off
Power Supply Commands
This section discusses the commands which you will use to program the supply’s voltage and current, protection circuits,
and enhanced features like storage and recall registers, and reprogramming delay. When programming, you should be
aware that the current, voltage and overvoltage ranges for each output of your supply may differ. Table 5-1 shows these
values for the power supply. If you send values out of these ranges, you will get a number range error. A summary of all
commands appears in Appendix C.
The output voltage of some output channels exceeds the safe operating limit of 42.2 V. To avoid any
electrical shock, program the voltage to zero volts or turn off ac input power before changing any rear
panel connections. Make certain all straps are properly connected, terminal block screws are securely
tightened and terminal block covers are replaced before reapplying power.
Voltage Programming
To program voltage, send the output channel and the programmed value. In the example below, output l is programmed to 5
V.
VSET 1,5
The values you send must always be volts. For example if you want to program 450 millivolts, convert to volts and then
send the command: