Rohde & Schwarz R&S FSP Series, Operating Manual

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R&S FSP Getting Started
Measurements on Modulated Signals
2.38 Operating Manual 1164.4556.12 - 06
➢
Keep turning the spinwheel until SAVE/RECALL FRAME appears in the list and
select the menu item SAVE/RECALL FRAME using the SELECT key.
➢
The cursor is set to GET PREDEFINED FRAME .
➢
Press the SELECT key.
➢
Select UP1TCH using the spinwheel and press the SELECT key.
In the following operating sequence for the R&S FSP, it is assumed that steps 1 to 6
of the previous example (
“Measurement Example 2 – Measuring the adjacent chan-
nel power of an IS136 TDMA signal” ) have already been performed.
1. Configuring the Gated Sweep function on the R&S FSP.
➢
Press the TRIG key.
➢
Press the GATED TRIGGER softkey.
➢
Press the EXTERN softkey.
➢
Press the GATE SETTINGS ! softkey.
The R&S FSP switches to time domain measurement so that the setting of the
Gated Sweep parameters can be checked visually.
➢
Press the SWEEPTIME softkey and enter 10 ms .
Exactly one TDMA burst will be displayed.
➢
Press the GATE DELAY softkey and enter 2 ms or set the Gate Delay using
the spinwheel so that the burst is reliably detected.
➢
Press the GATE LENGTH softkey and enter 5 ms or set the vertical line for the
gate length using the spinwheel so that the burst is reliably detected.
Fig. 2-4 Setting the parameters Gate Delay and Gate Length in time domain. The
time interval required to measure the spectrum is indicated by two vertical
lines.
➢
Press the PREV key.
The R&S FSP now performs the ACP measurement only during the switch-on
phase of the TDMA burst. The measurement is stopped during the switch-off
phase.