Service manual

Instrument Functions WLAN TX Measurements
R&S
®
FSV-K91/91n/91ac/91p
96Operating Manual 1176.7649.02 ─ 04
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Blue colored arrows represent the connections between the Tx antennas of the
DUT and the corresponding SMA plugs of the R&S®OSP-B101 option.
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Green colored arrows represent auxiliary connections of SMA plugs of the
R&S®OSP-B101 option.
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Yellow colored arrows represent the connection between the SMA plug of the
R&S®OSP-B101 option with the RF or analog baseband input of the analyzer.
OSP IP Address ← Sequential Using OSP Switch Setup
The analyzer and the R&S OSP switch platform have to be connected via LAN. Enter
the IP address of the OSP switch platform.
When using an R&S®OSP130 switch platform, the IP address is shown in the front dis-
play.
When using a R&S®OSP120 switch platform, connect an external monitor to get the IP
address or use the default IP address of the OSP switch platform. For details read the
OSP operation manual.
An online keyboard is displayed to enter the address in dotted IPV4 format.
Remote command:
CONFigure:WLAN:OSP:ADDRess on page 160
OSP Switch Module ← Sequential Using OSP Switch Setup
The R&S®OSP-B101 option is fitted in one of the three module slots at the rear of the
OSP switch platform. The DUT Tx antennas are connected with the analyzer via the
R&S®OSP-B101 module fitted in the OSP switch platform. Select the R&S®OSP-B101
module that is used for this connection.
Remote command:
CONFigure:WLAN:OSP:MODule on page 160
Manual Sequential MIMO Data Capture
Note: For sequential MIMO measurements the DUT has to transmit identical PPDUs
over time! The signal field, for example, has to be identical for all PPDUs. Otherwise,
manual data capture will not return reasonable measurement results.
For this MIMO method you must connect each Tx antenna of the WLAN DUT with the
analyzer and start data capturing manually (see "Capture" on page 96).
The dialog box shows a preview of the 4 capture memories (one for each RX
antenna).The PPDUs detected by the application are highlighted by the green bars.
Remote command:
CONF:WLAN:MIMO:CAPT:TYP MAN
CONF:WLAN:MIMO:CAPT RX1
INIT:IMM
CALC:BURS:IMM
Capture ← Manual Sequential MIMO Data Capture
For each Rx antenna the contents of the capture memory are displayed. Press the
"Capture" button for the corresponding antenna to start a new data capture.
Remote command:
INITiate<n>[:IMMediate] on page 177
General Settings Dialog Box (K91)