R&S PR100 User Manual
The data fields in the common header are always sent in Big Endian order (=
most significant byte first).
For <optional header> and <trace data> the order is determined by the
selector flag SWAP (see Table 20): if SWAP is not set the order is Big Endian,
if set the order is Little Endian.
The selector flags OFFSET and FSTRENGTH shown in Table 20, only have
an effect if the corresponding measurement functions are switched on:
OFFSET requires SENS:FUNC:ON “FREQuency:OFFSet”
FSTRENGTH requires SENS:FUNC:ON “FSTRength”
Note that LEVEL does not require the corresponding measurement function.
The selector flag CHANnel only contains the channel number when the
frequency mode is MSCan or FSCAN. Otherwise, it contains the value zero.
Table 20: Settings for <trace selector flags>. The “C Data Type” column
is the data type of the data that are included by setting the associated
flag. It is not the data type of the flag itself.
Selector Flag Hex
Value
C Data
Type
SCPI parameter Remarks
LEVEL 0x0000
0001
short “VOLTage:AC” Unit:1/10
dBVV
OFFSET 0x0000
0002
long “FREQuency:O
FFSet”
Unit: Hz
FSTRENGTH 0x0000
0004
short “FSTRength” Unit:1/10
dBVV
CHANNEL 0x0001
0000
short “CHANnel” See
SENS:
MSC:CHA
N
FREQ_LOW 0x0002
0000
unsigne
d long
“FREQuency:R
X” or
“FREQuency:L
OW:RX”
Unit: Hz
FREQ_HIGH 0x0020
0000
unsigne
d long
“FREQuency:HI
GH:RX”
Unit: Hz
SWAP 0x2000
0000
N.A. “SWAP” Data
order:
Little
Endian if
set; else
Big
Endian
SIGNAL_GREATER_S
QUELCH
0x4000
0000
N.A. “SQUelch” Only data
that
exceed
the
squelch
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