Tektronix NetTek YBT250, User Manual

Page: 158 / 338

Locating Interference
3- 56
YBT250 Field Transmitter & Interference Tester User Manual
Table 3- 9: GSM channel scanner controls (Cont.)
Field Description
Enable Demodulation
check box (adjacent to
each channel in the
measurement table) Sets the instrument to take and display GSM, C/I and
BSIC (NCC, BCC) demodulation measurements for
selected channels. Selecting only those channels for
which you need measurements speeds up the
measurement acquisition rate.
The measurements displayed depend on the detected
GSM signal type. If the GSM signal type is Traffic,
only the C/I measurement is shown. If the GSM signal
type is Control, then C/I and BSIC (NCC, BCC)
measurements are shown.
Show Checked/
Show All Toggles the contents of the measurement table to
show all available channels or show only those
channels that have their Enable Demodulation check
box selected. The default is Show Checked.
Sets the view in the measurement table and the graph
plot (if Graph From table is selected).
Uncheck All Clears the Enable Demodulation check box for all
listed channels in the measurement table.
Sort by:
Power, Frequency Sorts the displayed measurements table contents by
Power (in descending order) or Frequency (in
ascending order, based on channel numbers). The
table label (on the left side of the table) shows
Channels by Power when sorting by power, or
Channels when sorting by Frequency.
Note that some signal standards restart their channel
numbers within their listed channel range.