R&S ESCI Analyzer - MEAS
1166.6004.12 4.159 E-1
CHANNEL
BANDWIDTH
The CHANNEL BANDWIDTH softkey opens a table for defining
the channel bandwidths for the transmission channels and the
adjacent channels.
ACP CHANNEL BW
CHAN BANDWIDTH
ADJ 14 kHz
ALT1 14 kHz
ALT2 14 kHz
The transmission-channel bandwidth is normally defined by the
transmission standard. The correct bandwidth is set
automatically for the selected standard (see CP/ACP
STANDARD softkey).
With the IBW method (FAST ACP OFF), the channel bandwidth
limits are marked by two vertical lines right and left of the
channel center frequency. It can in this way be visually checked
whether the entire power of the signal under test is within the
selected channel bandwidth.
Measurements in the time domain (FAST ACP ON) are
performed in the zero span mode. The channel limits are
indicated by vertical lines. For measurements requiring channel
bandwidths deviating from those defined in the selected
standard the IBW method is to be used.
Refer to section "Setting of Bandwidths and Sweep Time – BW
key" for a list of available channel filters.
When measuring according to the IBW method (FAST ACP
OFF) the bandwidths of the different adjacent channels are to
be entered numerically. Since all adjacent channels often have
the same bandwidth, the other channels Alt1 and Alt2 are set to
the bandwidth of the adjacent channel on entering the adjacent-
channel bandwidth (ADJ). Thus only one value needs to be
entered in case of equal adjacent channel bandwidths. The
same holds true for the ALT2 channels (alternate channels 2)
when the bandwidth of the ALT1 channel (alternate channel 1)
is entered.
Note: The channel spacings can be set separately by
overwriting the table from top to bottom.
IEC/IEEE-bus command: SENS:POW:ACH:BWID:CHAN 14kHz
SENS:POW:ACH:BWID:ACH 1kHz
SENS:POW:ACH:BWID:ALT1 14kHz
SENS:POW:ACH:BWID:ALT2 14kHz
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