20 ieee-488.2 commands – Boonton 4530 Peak Power Meter User Manual User Manual
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Chapter 4
Boonton Electronics
Remote Operation
4530 Series RF Power Meter
STATus:QUEStionable:CONDition
Description:
Return the current value (condition) of the SCPI Questionable Status register. The follow-
ing table shows the bit assignments in the register:
Bit
Value
Definition
0
1
Voltage
1 = an internal power supply voltage is out of spec.
1 - 2
--
Not used
always returns 0
3
8
Power
1 = there has been a power error.
4
16
Temperature
1 = a sensor has drifted by more than 4C from autocal.
5 - 7
--
Not used
always returns 0
8
256
Calibration
1 = sensor requires calibration and/or zeroing
9 - 12
--
Not used
always returns 0
13
8192
Instrument Summary
14
16384
Command Warning
15
--
Not used
always returns 0
Syntax:
STATus:QUEStionable:CONDition?
Returns:
16-bit register value (0 to 32767)
Valid Modes:
Any
STATus:QUEStionable:ENABle
Description:
Set or return the Questionable Enable mask value. This value is used to enable particular
bits for generating a service request (SRQ) over the GPIB when certain conditions exist in
the Questionable Status register. When a mask bit is set, and the corresponding STB bit
goes true, an SRQ will be generated. No SRQ can be generated for that condition if the mask
bit is clear. The bits in the Status Byte register are generally summary bits, which are the
logical OR of the enabled bits from other registers.
Syntax:
STATus:QUEStionable:ENABle <n>
Argument:
<n> = 0 to 32767
Valid Modes:
Any
4.5.20 IEEE-488.2 Commands
The purpose of IEEE488.2 commands is to provide management and data communication instructions for the system by
defining a set of “*” commands (an asterisk followed by a three character code). These commands allow device control
and status monitoring, and are the basis for some of the commands of the SCPI STATus subsystem (see previous).
*CLS
Description:
Clear Status command. This command resets the SCPI status registers (Questionable Sta-
tus and Operation Status), the error queue, the IEEE488.2 Status Byte (STB) and Standard
Event Status (ESR) registers, and the measurement.
Syntax:
*CLS
Argument:
None
Valid Modes:
Any