Chapter 13
CDMA Measurement Mode
Introduction
This chapter presents information and procedures to make cdmaOne and CDMA2000
1xRTT measurements. Option 33, cdmaOne and CDMA2000 1xRTT (OTA), requires Op-
tions 31 and 43.
CDMA Measurements
The Cell Master can measure CDMA performance over the air with an antenna, or by con-
necting the base station directly to the Cell Master.
To measure a CDMA signal over the air, connect the appropriate frequency band antenna to
the Cell Master RF Input and an Anritsu GPS antenna to the Cell Master GPS connector.
To connect the base station to the Cell Master, connect the power amplifier of the base sta-
tion to the
RF In
port of the Cell Master using a coupler or attenuator.
CAUTION: The maximum input power without damage is +43 dBm on the RF
In port, and +23 dBm on the RF Out port. To prevent damage, always use a
coupler or high power attenuator.
External Reference Frequency
In order to get good frequency accuracy measurements, it is important to use an external
reference frequency attached to the Cell Master
Ext Ref Freq
input. Most base stations have
a reference frequency available on a BNC connector. The Cell Master is able to lock to dif-
ferent frequencies. To configure the Cell Master to use an external reference frequency:
Step 1.
On the Cell Master, press the
MODE
key, use the Up/Down arrow key to select
the
CDMA
mode and press
ENTER
.
Step 2.
Press the
SYS
key followed by the
Application Options
soft key.
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 external
frequency. If the message
External reference unavailable. Using internal reference.
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.
13-1
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...