Anritsu Spectrum Master MS2720T, User Manual

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CDMA Signal Analyzer 2-3 CDMA Measurement Setup
3GPP2 MG PN: 10580-00235 Rev. D 2-3
Walsh Codes Setup
Walsh Codes setup is used to select whether cdmaOne (Walsh Codes 64) or CDMA2000
1xRTT (Walsh Codes 128) is required for the measurements. When 128 codes is selected, the
upper CDP (Code Domain Power) graph displays the CDP in bit-reversed order.
1. Press the
Setup
main menu key.
2. Press the
Walsh Codes
submenu key, and the key is toggled between 64 codes and 128
codes.
GPS Setup
GPS provides improved accuracy in the timing circuit, which reduces frequency error.
To configure GPS, use the following procedure:
• Install a GPS antenna to the
GPS antenna
connection on the instrument’s connector
panel.
See the User Guide for additional information about GPS setup.
Figure 2-2. Walsh Codes Setup
Caution
A DC voltage is present on the GPS connector. Never connect anything other than
a GPS antenna to this port.
Note
CDMA base stations have GPS available at the cell Site. Connect the instrument
to the base station GPS Frequency Reference connector to make accurate
frequency error and timing measurements.
Setup
PN Setup
Walsh Codes
64 128
Meas Speed
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