Figure 84: CSS Test And Measurement Screen
9
Display the base radios transmission readings on the service monitors
Rx Meter
subscreen, as
follows: A panel of soft keys displays on the right side of the screen, including two
Reset
keys.
a
Click the
Rx Meter
subscreen.
A panel of soft keys displays on the right side of the screen, including two
Reset
keys.
b
Click the
Reset Acquire
soft key on the right side of the screen. This action re-synchronizes
the test set with the incoming signal.
c
Click the
Reset Meters
soft key on the right side of the screen. This stops, clears, and
restarts the acquisition of data for the data display fields.
Figure 85: HPD Service Monitor - Rx Meter Subscreen, Reset Soft Keys (Aeroflex 3900
Series Service Monitor)
10
Compare the value displayed in the
Signal Power
field to the base radio Tx Power Out
specification that matches your base radio configuration. See
NOTICE:
Account for cable loss in this comparison.
The output power reference plane is the output connector of the power amplifier. The
loss of the transmitter output cable (PA output to the back of the base radio) is 4% at
700/800 MHz. However, the base radio software allows the transmitter output power to
be set at 10% above rated value.
11
Note the value that displays in the
Freq. Error
field. Tolerance should be +/- 50 Hz.
12
Note the Error Vector Magnitude (EVM) value that displays in the
EVM avg
field. The value
should be less than or equal to 10%.
MN003286A01-E
Chapter 5: GTR 8000 Base Radio Optimization
202