Operation
Command Reference
Command | Description |
OUT <1/ON>,<0/OFF> | Enables or disables the supply’s voltage/current output. The supply will |
| continue to accept new commands while the output is disabled but these |
| will not be implemented until OUT ON or OUT 1 is received. OUT ON is the |
| default setting. When you start the supply in remote mode, the output is |
| enabled. |
| OUT OFF (or OUT 0) also sets the isolation signal on the rear panel J21 |
| connector, line 3. You can use the to trip external relays to isolate the power |
| supply from the load. |
| Initial value: OUT ON (or OUT 1) for output enabled |
|
|
OUT? | Asks for the present enabled/disabled status of the supply’s output |
| voltage/current. |
| Response: OUT 1 output enabled or |
| OUT 0 output disabled |
OVCAL | Causes the master controller to perform automatic calibration of the |
| supply’s over voltage protection circuitry. Set CMODE ON before using this |
| command. Ensure jumper J2 on the |
| remote operation. |
OVSET <voltage> | Sets the supply’s over voltage protection trip point in volts (default) or in |
| millivolts. If the trip point is exceeded, or if the trip point value is lower than |
| the present output voltage setting, the supply will ignore the command, turn |
| on the ERR LED, and set the ERR bit in the accumulated status register. |
| Reset with the RST command. |
| Range: 0 to 110% of model maximum output voltage (VMAX) |
| Initial value: 110% of model VMAX |
|
|
OVSET? | Asks for the supply’s present over voltage protection limit. |
| Response: OVSET <voltage> |
REM <1/ON>,<0/OFF> | Remote Enable. When set to REM 0, the power supply is in local mode. If a |
| command is sent from the computer, the power supply does not respond |
| but remains in local mode. When set to REM 1, the power supply will enter |
| remote mode if a command is sent from the computer. See also |
| “Remote/Local Operation” on page 23. |
REM? | Asks for the state of the remote enable. See REM command. |
| Response: REM <state> |
|
|
ROM? | Asks for the version number of the master and slave EPROMs located on |
| the interface PCB. |
| Response: ROM M:<version> S:<version> |
|
|
RST | Resets the supply to present voltage and current settings if the output is |
| disabled by over voltage or foldback protection. Output values may be |
| changed via VSET, ISET, and OVSET while the unit is disabled, but those |
| values will not take effect until RST is applied. |
44 | Operating Manual for |