![Rohde & Schwarz R&S FSP Series Operating Manual Download Page 168](http://html.mh-extra.com/html/rohde-and-schwarz/rands-fsp-series/rands-fsp-series_operating-manual_1477864168.webp)
R&S FSP
Instrument Functions
Analyzer Mode
4.96
Operating Manual 1164.4556.12 - 06
CP/ACP
(ABS REL)
The
CP ACP (ABS REL)
softkey (channel power absolute/relative) switches
between absolute and relative power measurement in the channel.
Remote command:
SENS:POW:ACH:MODE ABS
CHAN PWR / HZ
The
CHAN PWR / HZ
softkey toggles between the measurement of the total chan-
nel power and the measurement of the channel power referenced to a 1-Hz band-
width.
The conversion factor is
By means of this function it is possible e.g. to measure the signal/noise power den-
sity or use the additional functions
CP/ACP REL
and
SET CP REFERENCE
to
obtain the signal to noise ratio.
Remote command:
CALC:MARK:FUNC:POW:RES:PHZ ON|OFF
POWER MODE
The
POWER MODE
softkey opens the submenu for selecting the power mode.
CLEAR/WRITE
In the
CLEAR/WRITE
mode the channel power and the adjacent channel powers
are calculated directly from the current trace (default mode).
MAX HOLD
In
MAX HOLD
mode the power values are still derived from the current trace, but
they are compared with the previous power value using a maximum algorithm. The
higher value is remained.
MAX HOLD
mode is only applicable if the number of adjacend channels is > 0
Remote command:
CALC:MARK:FUNC:POW:MODE WRIT|MAXH
CP/ACP ABS
The absolute power in the transmission channel and in the adjacent
channels is displayed in the unit of the y-axis, e.g. in dBm, dBmV.
CP/ACP REL
For adjacent-channel power measurements (
NO. OF ADJ CHAN
>
0), the level of the adjacent channels is displayed relative to the
level of the transmission channel in dBc.
For channel power measurements (
NO. OF ADJ CHAN
= 0) with a
single carrier, the power of the transmission channel is displayed
relative to the power of a reference channel defined by
SET CP
REFERENCE
. This means:
1. Declare the power of the currently measured channel as the
reference value, using the
SET CP REFERENCE
softkey.
2. Select the channel of interest by varying the channel frequency
(R&S FSP center frequency).
With linear scaling of the y-axis, the power of the new channel rela-
tive to the reference channel (CP/CP
ref
) is displayed. With dB scal-
ing, the logarithmic ratio 10lg (CP/CP
ref
) is displayed.
The relative channel power measurement can thus also be used for
universal adjacent-channel power measurements. Each channel
can be measured individually.
10 lg
1
Channel Bandwidth
-----------------------------------------------
⋅
Summary of Contents for R&S FSP Series
Page 1: ...R S FSP Spectrum Analyzer Operating Manual 1164 4556 12 06 Test Measurement Operating Manual ...
Page 24: ...R S FSP Putting into Operation 1 2 Operating Manual 1164 4556 12 06 ...
Page 72: ...R S FSP Manual Operation 3 2 Operating Manual 1164 4556 12 06 ...
Page 793: ...R S FSP Index Operating Manual 1164 4556 12 06 4 11 ...
Page 794: ...R S FSP 4 12 Operating Manual 1164 4556 12 06 ...
Page 795: ...Operating Manual 1164 4556 12 06 4 13 R S FSP ...
Page 796: ...R S FSP 4 14 Operating Manual 1164 4556 12 06 ...