Command reference
R&S
®
ZNB/ZNBT
1295User Manual 1173.9163.02 ─ 62
[SENSe<Ch>:]POWer:GAINcontrol <ReceiverName>, <Mode>
[SENSe<Ch>:]POWer:GAINcontrol? <ReceiverName>
Defines port-specific gain settings for the related channel.
Note:
●
These settings will only take effect if [SENSe<Ch>:]POWer:GAINcontrol:
GLOBal is set to MANual for channel <Ch>.
●
Without the Extended power range option only the gain of the measurement receiv-
ers (the b-waves) can be statically set (to LNOise or LDIStortion); the reference
receiver always uses automatic gain control (AUTO). With the option available,
also the gain of the reference receivers (the a-waves) can be set statically.
●
If you also want to distinguish between different sweep segments, use
[SENSe<Ch>:]SEGMent<Seg>:POWer:GAINcontrol instead.
Suffix:
<Ch>
.
Channel number
Parameters:
<Mode> AUTO | LDIStortion | LNOise
AUTO
automatic/adaptive gain control (AGC) according to the RF input
level
LDIStortion
fixed, small IF gain, for high input levels
LNOise
fixed, large IF gain, for low input levels
*RST: LDIStortion
Parameters for setting and query:
<ReceiverName> String parameter defining the wave(s) followed by the drive port;
see examples below and Table 7-4.
Example:
*RST; :SENSe:POWer:GAINcontrol:GLOBal MANual
Activate independent GC settings for each drive port.
SENSe:POWer:GAINcontrol 'B2D1', LNO
Set the GC for the received wave b
2
(port 2) to "Low Noise". The
setting applies while port 1 is the drive port.
SENSe:POWer:GAINcontrol 'A2B2B3D2', LNO
Set the GC mode for the waves a
2
, b
2
, and b
3
to "Low Noise".
The setting applies while port 2 is the drive port.
SENSe:POWer:GAINcontrol? 'B1D2'
Query the GC setting for the wave b
1
while port 2 is the drive
port. The response is 1, LDIS (default setting).
Manual operation:
See "Drive-port specific settings" on page 581
[SENSe<Ch>:]POWer:GAINcontrol:ALL <Mode>
Applies the same manual gain control (GC) <Mode> to all a and b wave receivers.
SCPI command reference
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