KEPCO TMA VXI-27 - Manual (Page 52)

TMA VXI-27 101602
C-3
C.8
INSTrument[:SELect]?
QUERY
INST:SEL?
Syntax: Short Form :INST:SEL? Long Form: INSTrument:SELect ?
Return value: <VAL> 1 to 31
Description: Used to determine which channel selected.
C.9
INSTrument:STATe
COMMAND
INST:STAT
Syntax: Short Form :INST:STAT <val> Long Form: INSTrument:STATe <val>
Description: 0 (off) sets output to 0; 1 (on) restores output voltage and current. (see Figure C-2)
FIGURE C-2. IDENTIFYING AND SELECTING DEVICES ON BITBUS
C.10 MEASure[:SCALar]:CURRent[:DC]? QUERY
MEAS:CURR?
Syntax: Short Form: MEAS[:SCAL]:CURR[:DC]? <boolean>
Long Form: MEASure[:SCALar]:CURRent[:DC]? <boolean>
<boolean> = 0 or 1
Return Value: <num_value> (digits with decimal point and Exponent)
Description: Measures actual current. This query returns the actual value of output current (measured at the out-
put terminals) as determined by the programmed value of voltage and current and load conditions.
NOTE: The SCPI convention for this command allows the controller to establish the range and accu-
racy of the measurement if nn,nn is added after the question mark; the power supply accepts this for-
mat but sets the command warning bit (13) in the status questionable register and ignores the extra
characters. (See example, Figure C-3.)
C.11 MEASure[:VOLTage][:SCALar][:DC]? QUERY
MEAS:VOLT?
Syntax: Short Form: MEAS[:SCAL]:VOLT[:DC]? <boolean>
Long Form: MEASure[][:SCALar]:VOLTage[:DC]? <boolean>
<boolean> = 0 or 1
Return Value: <num_value> (digits with decimal point and Exponent)
Description: Measures actual voltage. This query returns the actual value of output voltage (measured at the out-
put terminals) as determined by the programmed value of voltage and current and load conditions.
Note: Power Supply at address 1 is an MBT 25-14, address 2 is an MST 6-12, and address 4 is a BOP 100-1.
*RST Devices are located on the BITBUS (IEEE 1118) as noted above.
INST:SEL 1;*IDN? Controller returns KEPCO,MBT,1,V4.2-3.0 (Channel 1 selected; device con-
nected to BITBUS channel 1 is MBT 25-14, firmware version 3.0; TMA
firmware version is 4.2).
INST:NSEL 2;*IDN? Controller returns KEPCO,MST,2,V4.2-2.6 (Channel 2 selected; device con-
nected to BITBUS channel 2 is MST 6-12, firmware version 2.6; TMA firm-
ware version is 4.2).
VOLT? MAX Controller returns 6.0E0 indicating a 6 volt unit (MST 6-12 at connected to
channel 2).
VOLT4? MAX;:INST:SEL? Controller returns 1.0E2,4 indicating address 4 is selected and the device
connected to BITBUS channel 4 (BOP 100-1) is a 100 volt unit.
*IDN? Controller returns KEPCO,BOP,1,V4.2-1.1 (Device connected to BITBUS
channel 4 is a BOP with BIT card firmware version 1.1; TMA firmware ver-
sion is 4.2).
*RST;*IDN? Controller returns KEPCO,MBT,1,V4.2-3.0 (Channel 1 selected; device con-
nected to BITBUS channel 1 is MBT 25-14, firmware version 3.0; TMA
firmware version is 4.2).
INST:SEL 3;*IDN? Controller returns KEPCO,PSC,3,V4.2 (Channel 3 selected; unknown
device connected to channel 3; TMA firmware version is 4.2).