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Command Reference
TM-XR9B-01XN 3–13
LLO Disables the front panel LOCAL switch. When LLO is in effect you can only
return to local mode using the GTL command. You can remove the local lockout
with the REN command. See also “Remote/Local Operation” on page 2–20.
MASK
<mnemonics>
Disables the supply's previously unmasked operating conditions from setting bits
in the fault and status registers. See “Accumulated Status, Status, and Fault
Registers” on page 3–17. Mnemonics are separated from each other by commas
and may be sent in any order.
Mnemonics: CV, CC, OV, OT, SD, FOLD, ERR, PON, REM, ACF, OPF, SNSP
Note: UNMASK NONE = MASK ALL (Initial value)
MASK NONE = UNMASK ALL
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 user lines
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 J65 on the Ethernet/RS-232 Interface PCB is connected for 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>
Table 3-7
Command Reference
TM-XR9B-01XN.book Page 13 Monday, April 19, 2004 9:00 AM