Step 3.
Select the
External Ref Freq
soft key and use the keypad or Up/Down arrow
keys to enter the frequency. Press
ENTER
to select.
As the Cell Master locks to the source, the message
Ext Ref Unlocked
may briefly flash
on the display. If this message stays on, check that the Cell Master is set to the correct ex-
ternal frequency. If the message
External reference unavailable. Using internal ref-
erence.
displays, then there is no reference frequency present on the
Ext Ref Freq
input.
NOTE: Frequency error measurements are only as accurate as the reference
frequency. Frequency error measurements without an external reference fre-
quency are not as accurate, and may carry a large constant offset.
Setting the Frequency
Press the
FREQ/DIST
key to set and change frequencies for the EVDO measurements. The
Cell Master must be configured to tune to the frequency being output by the base station.
The Cell Master contains a table of common signal standards.
NOTE: Refer to the chapter on Handheld Software Tools for information on cre-
ating and storing custom signal standards.
To choose a standard for your application:
Step 1.
Press the
FREQ/DIST
key.
Step 2.
Press the
Signal Standard
soft key and the
Select Standard
soft key. A table of
currently selected signal standards will be displayed. To view all the signal stan-
dards in the instrument, press the
Show All
soft key. The currently selected sig-
nal standards will be marked on that list with an asterisk.
Step 3.
To select a signal standard, use the soft keys or the Up/Down arrow key to high-
light the standard and press
ENTER
. The newly selected signal standard will be
marked with an asterisk.
Step 4.
To deselect a signal standard, press the
Select/Deselect
soft key.
Step 5.
To view only the selected signal standards, press the
Show Selected
soft key.
The list will show only the selected standards.
Step 6.
Press the
Select Channel
soft key to choose the appropriate channel for the se-
lected standard. The Cell Master will automatically adjust the span for the
EVDO signal.
Amplitude
Press the
AMPLITUDE
key to change amplitude configurations.
Select the
dBm/Watts
soft key to choose to display the measurement results in either dBm
or Watts.
Press the
Power Offset
soft key and enter a power offset to have the Cell Master automati-
cally adjust for the loss through any external cables, attenuators, and couplers.
NOTE: If the loss is not known, Option 21, Transmission Measurement, or the
Offset Calibration can be used to measure the loss of the system.
18-2
Chapter 18 EVDO Mode
Summary of Contents for Cell Master MT8212B
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Page 222: ...12 4 Chapter 12 GPS Feature Figure 12 3 Saved GPS Location Information...
Page 231: ...Chapter 13 CDMA Measurement 13 9 Figure 13 5 CDMA Display with Markers...
Page 255: ...Chapter 18 EVDO Mode 18 5...