HP 8163A Series Programming Manual page 70

Measurement Operations & Settings
command:
syntax:
description:
parameters:
response:
N O T E
example:
affects:
dual sensors:
command:
syntax:
description:
parameters:
response:
example:
affects:
command:
syntax:
description:
parameters:
response:
example:
affects:
dual sensors:
70
:FETCh[n][:CHANnel[m]][:SCAlar]:POWer[:DC]?
:FETCh[n]:[CHANnel[m]][:SCAlar]:POWer[:DC]?
Reads the current power meter value. It does not provide its own triggering and so must
be used with either continuous software triggering (see
":INITiate[n]:[CHANnel[m]]:CONTinuous?" on page 71) or a directly preceding imme-
diate software trigger (see ":INITiate[n]:[CHANnel[m]][:IMMediate]" on page 70).
It returns the power meter value the previous software trigger measured. Any subsequent
FETCh command will return the same value, if there is no subsequent software trigger.
none
The current power meter value as a float value in dBm,W or dB.
If the reference state is absolute, units are dBm or W.
If the reference state is relative, units are dB.
fetc1:pow? → +6.73370400E-04<END>
All power meters and return loss modules
Master and slave channels are independent.
:FETCh[n][:CHANnel[m]][:SCAlar]:RETurnloss?
:FETCh[n]:[CHANnel[m]][:SCAlar]:RETurnloss?
Reads the current return loss value. It does not provide its own triggering and so must be
used with either continuous software triggering (see
":INITiate[n]:[CHANnel[m]]:CONTinuous?" on page 71) or a directly preceding imme-
diate software trigger (see ":INITiate[n]:[CHANnel[m]][:IMMediate]" on page 70).
It returns the return loss value the previous software trigger measured. Any subsequent
FETCh command will return the same value, if there is no subsequent software trigger.
none
The current power meter value as a float value in dB.
fetc1:ret? → +6.73370400E-00<END>
All return loss modules
:INITiate[n]:[CHANnel[m]][:IMMediate]
:INITiate[n]:[CHANnel[m]][:IMMediate]
Initiates the software trigger system and completes one full trigger cycle, that is, one mea-
surement is made.
none
none
init
All power meters and return loss modules
Can only be sent to master channel, slave channel is also affected.
HP 8163A Lightwave Multimeter, HP 8164A Lightwave Measurement System,
& HP 8166A Lightwave Multichannel System User's Guide, E1299
Measurement Functions – The SENSe Subsystem