Service manual

WLAN TX Measurements

R&S

FSV-K91/91n/91ac/91p

39Operating Manual 1176.7649.02 ─ 04

Fig. 3-6: R&S

FS-Z11 Trigger Unit connections

1. Connect the EXT TRIG inputs of all analyzers (master and slaves) to the TRIG

OUT 1 to 4 (or 1 and 2 only for measurements on two Tx antennas) of the trigger

unit.

The order is irrelevant, that means you could also connect the master analyzer to

the TRIG OUT 2 output of the trigger unit, for example.

2. If necessary for the required operating mode (see above), connect the NOISE

SOURCE output of the master analyzer to the NOISE SOURCE CONTROL INPUT

of the trigger unit.

3.7 Signal Field Measurement (IEEE 802.11ac, n (SISO

+MIMO))

For the IEEE 802.11 ac, n (SISO+MIMO) standards, an enhanced Signal Field mea-

surement is available, with an improved result display and additional information.

For each analyzed PPDU of the signal, the Signal Field measurement contains the HT-

SIG

and HT-SIG

as a bit sequence. Where appropriate this information is also provi-

ded in human-readable form beneath the bits.

The list header contains the following information:

●

The first line indicates the HT-SIG field assigned to the corresponding bit sequence

(See IEEE Std 802.11n-2009 Figure 20-6—Format of HT-SIG1 and HT-SIG2).

Signal Field Measurement (IEEE 802.11ac, n (SISO+MIMO))