Rohde & Schwarz ZNB20, User Manual

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Command Reference
R&S
®
ZNB/ZNBT
1071 User Manual 1173.9163.02 ─ 38
[SENSe<Ch>:]SEGMent<Seg>:POWer:GAINcontrol <ReceiverName>, <Mode>
[SENSe<Ch>:]SEGMent<Seg>:POWer:GAINcontrol? <ReceiverName>
Defines port- and segment-specific IF gain settings.
These settings apply if and only if "Segmented AGC" is enabled (see
[SENSe<Ch>:
]SEGMent<Seg>:POWer:GAINcontrol:CONTrol
).
Note:
●
Without the Extended Power Range option only the gain of the measurement
receivers (the b-waves) can be statically set (to LNOise or LDIStortion); the refer-
ence receiver always uses automatic gain control (AUTO). With the option availa-
ble, also the gain of the reference receivers (the a-waves) can be set statically.
●
Disable "Segmented AGC" and use
[SENSe<Ch>:]POWer:GAINcontrol
instead, if no distinction between different sweep segments shall be made.
Suffix:
<Ch>
.
Channel number
<Seg> Sweep segment number
Setting parameters:
<Mode> LNOise | LDIStortion | AUTO
AUTO
–
automatic/adaptive gain control (AGC) according to the
RF input level.
LNOise
–
static, large IF gain, for low input levels.
LDIStortion
–
static, small IF gain, for high input levels.
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 AGC settings for each drive port.
SENSe:SEGMent1:ADD; :SENSe:SWEep:TYPE SEGMent
Create a new sweep segment no. 1 and activate segmented
sweep type.
SENSe:SEGMent1:POWer:GAINcontrol:CONTrol ON
Enable segmented AGC.
SENSe:SEGMent1:POWer:GAINcontrol 'B2D1', LNO
Set the ACG for the received wave b
2
(port 2) in sweep segment
no. 1 to "Low Noise". The setting applies while port 1 is the drive
port.
SENSe:SEGMent1:POWer:GAINcontrol 'A2B2B3D2',
LNO
Set the ACG for the waves a
2
, b
2
, and b
3
in sweep segment no.
1 to "Low Noise". The setting applies while port 2 is the drive
port.
SENSe:SEGMent1:POWer:GAINcontrol? 'B1D2'
Query the ACG setting for the wave b
1
in sweep segment no. 1
while port 2 is the drive port. The response is
1, LDIS
(default
setting).
SCPI Command Reference