Emerson R&S SGT100A User Manual page 240

®
R&S SGT100A
In Figure
power splitter for additional power measurements. For more information, see the appli-
cation sheet.
1
Figure 6-28: Test setup
1 = R&S SGT
2 = LAN interface
3 = USER 2 connector
4 = RF 50 Ω connector
5 = DUT
6 = RF connector
7 = R&S NRQ6 power sensor
8 = LAN PoE+ interface
9 = "TRIG2" connector at the power sensor
10 = Ethernet switch supporting PoE+ power delivery, for example.
11 = Computer
To prepare the R&S SGT for power servoing
1. Connect the instruments as in
2. Using the "NRP Sensor Mapping" dialog, detect the power sensor connected at the
R&S SGT.
See
3. Activate the RF output, set "RF Off > RF On".
4. Configure power servoing at the R&S SGT:
a) Open "SGMA-GUI > Instrument Name > RF > Level > Power Servoing".
b) Select the connected "Sensor".
c) Define "Target" and "Offset (Gain)", that is the desired output power level and
d) Set the "Sensor Aperture Time".
e) Optionally, enable "Level Tracking (500 ms)" to compensate droop effects.
f)
g) Start power servoing procedure by pressing "Start".
User Manual 1176.8674.02 ─ 12
6-28, the test setup also comprises an optional spectrum analyzer and a
2 3 4
11
Chapter 6.7.7.3, "NRP sensor
the expected gain of the DUT.
The R&S SGT retrieves the "Sensor Bandwidth" automatically from the con-
nected sensor.
Activate power servoing by setting "Power Servoing > State > On".
5
10
Figure 6-28.
mapping", on page 253.
Signal generator settings
RF settings
6 7 8
LAN PoE+
NRQ
6
F requency Selective Power Sensor
Host
Interface
LO I/
0
Sample Clock I/O (Default:
120 MHz)
9
240