Measurement Operations & Settings Measurement Functions – The SENSe Subsystem
90 Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition
command: :READ[n][:CH ANnel[m]]:POWer:ALL:CONFig?
syntax: :READ[n]:[CHANnel[m]]:POWer[:DC]:ALL:CONFig?
description: Returns the slot and channel numbe rs for all available power met er channels.
Use this command to match returned power value s to the appropriate slot and channel num -
ber.
parameters: none
response: A binary block (Intel byte order) consistin g of 2-byte unsigned integer val ue pairs (so each
pair has 4 bytes). The first member o f 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 firmwar e or later).
dual sensors:
command: :READ[n][:CH ANnel[m]][:SCALar]:POWer[:DC]?
syntax: :READ[n]:[CHANnel[m]][:SCALar]:POWer[:DC]?
description: Reads the current power meter value, o r for a return l oss module th e power value a t the re-
turn loss diode (back reflection path). It prov ides its own software triggering and do es not
need a triggering c ommand.
If the software trigger system operates continuously (see
“:INITiate[n]:[CHANnel[m]]:CONTinuous?” on page89), this comman d is identical to
“:FETCh[n][:CHANnel[m]][:SCAlar]:POWer[:DC]?” on pag e 87.
If the software trigger system does not operate continuously, this comm and is identical to
generating a software trigger (“:INITiate[n]:[CHANnel[m]][:IM Mediate]” on page 88) and
then reading the po wer meter valu e.
NOTE The power meter must be running fo r this command to be effective .
parameters: none
response: The current power meter reading as a flo at 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 att enuator with power control
dual sensors: Can only be sent to master channel, sl ave channel is also triggere d.
To read a simultaneous result from the slave channel, send
“:FETCh[n][:CHANnel[m]][:SCAlar]:POWer[:DC]?” on pag e 87 directly after this command.