R&S 1129.7246.03, Operating Manual

Page: 219 / 855

R&S ESU Instrument Functions
Analyzer Mode
4.188 Operating Manual 1302.6163.12 - 03
If the spacings are not equal, the channel distribution according to the center
frequency is as follows:
• Odd number of TX channels:
The middle TX channel is centered to center frequency.
• Even number of TX channels:
The two TX channels in the middle are used to calculate the frequency between
those two channels. This frequency is aligned to the center frequency.
Adjacent channels
Since all the adjacent channels often have the same distance to each other, the
entry of the adjacent-channel spacing (ADJ) causes channel spacing ALT1 to be set
to twice and channel spacing ALT2 to three times the adjacent-channel spacing (and
so on). Thus only one value needs to be entered in case of equal channel spacing.
The same holds true for the ALT2 channels when the bandwidth of the ALT1 chan-
nel is entered.
Remote command:
SENS:POW:ACH:SPAC:CHAN 20kHz
SENS:POW:ACH:SPAC:ACH 20kHz
SENS:POW:ACH:SPAC:ALT1 40kHz
SENS:POW:ACH:SPAC:ALT2 60kHz
...
The channel spacings can be set separately by overwriting the table from top to
bottom.
If the ACP or MCACP measurement is started, all settings according to the stan-
dard including the channel bandwidths and channel spacings are set and can be
adjusted afterwards.