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Measurement Operations & Settings Measurement Functions – The SENSe Subsystem
90 Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition
command:
:READ[n][:CHANnel[m]]:POWer:ALL:CONFig?
syntax: :READ[n]:[CHANnel[m]]:POWer[:DC]:ALL:CONFig?
description: Returns the slot and channel numbers for all available power meter channels.
Use this command to match returned power values to the appropriate slot and channel num-
ber.
parameters: none
response: A binary block (Intel byte order) consisting of 2-byte unsigned integer value pairs (so each
pair has 4 bytes). The first member of the pair represents the the slot number, the second
member of the pair represents the channel number.
example: read1:pow:all:conf? → interpreted as
1|1|1|2|12|1<END>
This 12-byte block means that there are three powermeters present:
Slot 1, Channel 1
Slot 1, Channel 2
Slot 12, Channel 1
affects: All power meters (v3.0x firmware or later).
dual sensors:
command:
:READ[n][:CHANnel[m]][:SCALar]:POWer[:DC]?
syntax: :READ[n]:[CHANnel[m]][:SCALar]:POWer[:DC]?
description: Reads the current power meter value, or for a return loss module the power value at the re-
turn loss diode (back reflection path). It provides its own software triggering and does not
need a triggering command.
If the software trigger system operates continuously (see
“:INITiate[n]:[CHANnel[m]]:CONTinuous?” on page 89), this command is identical to
“:FETCh[n][:CHANnel[m]][:SCAlar]:POWer[:DC]?” on page 87.
If the software trigger system does not operate continuously, this command is identical to
generating a software trigger (“:INITiate[n]:[CHANnel[m]][:IMMediate]” on page 88) and
then reading the power meter value.
NOTE
The power meter must be running for this command to be effective.
parameters: none
response: The current power meter reading as a float value in dBm, W or dB.
NOTE
If the reference state is absolute, units are dBm or W.
If the reference state is relative, units are dB.
example: read1:pow? → +1.33555600E-006<END>
affects: All power meters and return loss modules and attenuator with power control
dual sensors: Can only be sent to master channel, slave channel is also triggered.
To read a simultaneous result from the slave channel, send
“:FETCh[n][:CHANnel[m]][:SCAlar]:POWer[:DC]?” on page 87 directly after this command.