Rohde & Schwarz FPL1000 Series, User Manual

Page: 277 / 899

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
277 User Manual 1178.3370.02 ─ 03
7.2.3.8 Reference: Predefined CP/ACLR Standards
When using predefined standards for ACLR measurement, the test parameters for the
channel and adjacent-channel measurements are configured automatically.
You can select a predefined standard via the "CP / ACLR Standard" softkey in the "Ch
Power" menu or the selection list in the "General Settings" tab of the "ACLR Setup"
dialog box (see
" Standard " on page 263).
Table 7-10: Predefined CP / ACLR standards with remote command parameters
Standard Remote parameter
None NONE
EUTRA/LTE Square EUTRa
EUTRA/LTE Square/RRC REUTra
W-CDMA 3GPP FWD FW3Gppcdma
W-CDMA 3GPP REV RW3Gppcdma
WLAN 802.11A AWLAN
WLAN 802.11B BWLAN
RFID 14443 RFID14443
TETRA TETRa
7.2.4 Carrier-to-Noise Measurements
Measures the carrier-to-noise ratio. C/No measurements normalize the ratio to a 1 Hz
bandwidth.
● About the Measurement ........................................................................................277
● Carrier-to-Noise Results ........................................................................................278
● Carrier-to-Noise Configuration .............................................................................. 279
● How to Determine the Carrier-to-Noise Ratio ....................................................... 280
7.2.4.1 About the Measurement
The largest signal in the frequency span is the carrier. It is searched when the C/N or
C/N
0
function is activated and is marked using a fixed reference marker ( "FXD" ).
To determine the noise power, a channel with a defined bandwidth at the defined cen-
ter frequency is analyzed. The power within this channel is integrated to obtain the
noise power level. (If the carrier is within this channel, an extra step is required to
determine the correct noise power level, see below.)
The noise power of the channel is subtracted from the maximum carrier signal level,
and in the case of a C/N
0
measurement, it is referred to a 1 Hz bandwidth.
Measurements and Results