7
1.4.4
Remote Queries
When the output is ON, you may query the output current and voltage, as well as the output state and voltage and current
setpoints using the commands:
MEASure:VOLTage?
Measure and return output voltage (volts)
MEASure:CURRent?
Measure and return output current (amps)
OUTPut?
Query output state
VOLTage?
Query voltage setpoint (volts)
CURRent?
Query current setpoint (amps)
POWer?
Query power setpoint (watts)
Voltage is returned in volts, current in amperes, and power in watts. The output state is either ON or OFF.
1.4.5
Additional SCPI Commands
Regardless of the output state, you can query Status and Error registers, as described in Section 6.0.
1.4.6
Additional Capabilities
When the output is OFF, you can switch operating modes, as described in Section 1.0.
When the output is ON, you will be able to execute only those commands which activate and deactivate the output and measure
the output voltage and current.
1.5
ANALOG CURRENT CONTROL MODE
1.5.1
Current Setpoint
When the unit is in Analog Current Control Mode, the Analog Current channel supplies the Current Setpoint.
1.5.1.1 Scaling
You can select 3 volt, 5 volt, or 10 volt scaling for the analog current input. This is the value which represents the maximum
model-specific current. For example, if you have the 400V 2.5A model and have selected the 10V scaling, then 10 volts applied
across the Analog Current channel will result in a 2.5 amp setpoint. For the same scaling, 5 volts applied across the Analog
Current channel will result in a 0.750 amp setpoint.
If Analog Current Control Mode is entered via the front panel, you will be asked to select which scaling you want. You may also
select scaling with the SCPI command:
SYSTem:MODe:ASCale CURRent,<3|5|10>
1.5.2
Voltage Setpoint
The Voltage Setpoint is the last voltage value set when in Local Mode, and once in Analog Current Control Mode, cannot be
changed either from the front panel or by a SCPI command.
1.5.3
Activating/deactivating the output
You can activate or deactivate the output either from the front panel Output On/Off button or by the SCPI command:
OUTPut <ON|OFF>
Activate/deactivate output
