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Signal Conditioning Measurement Operations & Settings
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 153
command:
:OUTPutn[:CHANnel[m]]:POWer:REFerence
syntax: :OUTPutn[:CHANnel[m]]:POWer:REFerence<wsp><value>[PW | NW | UW | MW | W |
DBM ] | MIN | MAX | DEF
description: Sets the reference power (P
ref
). The reference power is used to calculate the filter attenua-
tion (
α
filter
) from the output power (P ) . A change to the reference power does not affect
the filter attenuation.
P
set(new)
(dBm) = P
ref (new)
(dBm
)
-
α
filter
(dB) - P
Offset
(dB)
parameters: <value>
MIN | MAX | DEF
Desired reference power (if unit not specified current unit is used).
Sets the reference power to the module limits, or the module default.
response: none
example: OUTP1:POW:REF 6dBm
affects: Attenuator modules without power control.
command:
:OUTPutn[:CHANnel[m]]:POWer:REFerence?
syntax: :OUTPutn[:CHANnel[m]]:POWer:REFerence?<wsp>MIN | MAX | DEF
description: Without the optional parameter, queries the reference power value.
parameters: MIN|MAX|DEF Queries the reference power limits, or the module default.
response: 4 byte Intel floating point; reference power in current power unit.
example: OUTP1:POW:REF? → 6<END>
affects: Attenuator modules without power control.
command:
:OUTPutn[:CHANnel[m]]:POWer:REFerence:POWermeter
syntax: :OUTPutn[:CHANnel[m]]:POWer:REFerence:POWer<wsp><slot>,<channel>
description: Copies the power value (P
ext
) from an external powermeter module (hosted by the same
mainframe) to the attenuator module’s reference power parameter (P
ref
):
P
ref
(dBm) = P
ext
(dBm) +
α
filter
(dB)
parameters: <slot>
<channel>
Slot number of the powermeter.
Channel number of the powermeter.
response: none
example: OUTP1:POW:REF:POW 4,2
affects: Attenuator modules without power control.