Power Measurements – MEAS Key R&S FSL
1300.2519.12 4.96 E-11
Channel Bandwidth
Opens the TX/ACP Channel Bandwidth dialog box to enter the channel bandwidths for the
transmission channels and the adjacent channels. The entry TX is only available for the multi–
carrier ACP measurement.
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).
Measurements in zero span (see Fast ACP On/Off softkey) 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.
With the IBW method (see Fast ACP On/Off softkey), 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.
If 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) if the bandwidth of the Alt1 channel (alternate channel 1) is
entered.
For details on available channel filters see "List of available RRC and channel filters" on page
4.20.
Remote: POW:ACH:BWID 30kHz
Remote: POW:ACH:BWID:ACH 30kHz
Remote: POW:ACH:BWID:ALT2 30kHz
Channel Spacing
Opens the TX/ACP Channel Spacing dialog box to enter the channel spacings for the TX
channels and for the adjacent channels.
The entry TX is only available for the multi–carrier ACP measurement.
– TX channels (left column)
TX1–
2
spacing between the first and the second carrier
TX2–
3
spacing between the second and the third carrier
... ...
The spacings between all adjacent TX channels can be defined separately. In order to allow a
convenient setup for the system with equal TX channel spacing, the value of TX spacing 1–2 is
copied in all the spacing below after entry, the TX spacing 2–3 is copied in all the spacing
below after entry and so forth. For different spacings, a setup from top to bottom is necessary.
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