Anrtisu Cell Master MT8212B, User Manual, Page: 253 / 294

The
CDP Scale
soft key can be used to change the range of the Code Domain Power screen.
The Cell Master will automatically change attenuation, preamplifier and digital gain set-
tings to make the best EVDO measurements.
Measurement and Display
The following is the
Setup
menu available through the MEAS/DISP key:
PN Search
— To determine PN Numbers and timing errors, the Cell Master needs a timing
reference. The timing can come from the base station when the Cell Master is connected to
the base station or it can be recovered from GPS when a GPS antenna is connected to the
Cell Master.
q
GPS Auto
— The Cell Master uses GPS as the timing reference, and automat-
ically detects the strongest pilot. The Anritsu GPS antenna must be connected
to the Cell Master GPS antenna connector. GPS must be turned on under
Sys|GPS|GPS On/Off
and the GPS must be locked to the satellites before
GPS Auto can be used.
NOTE: Refer to Chapter 12 for more information on using the GPS feature.
q
GPS Manual
— The Cell Master uses GPS as the timing reference, but it
searches only for the specified PN. The GPS antenna must be connected to
the Cell Master GPS antenna. GPS must be turned on under
Sys|GPS|GPS
On/Off
and the GPS must be locked to the satellites before GPS Manual can
be used.
q
External Auto
— The Cell Master uses an external even second time mark as
the timing reference. The time mark is usually available at the base station on
a BNC connector labeled as "ESTM" or "PP2S." The ESTM must be con-
nected to the
CDMA Timing Input
connector on the Cell Master. The Cell
Master will automatically detect the strongest pilot.
q
External Manual
— The Cell Master uses an external even second time mark
as the timing reference. This is usually available at the base station on a BNC
connector labeled as "ESTM" or "PP2S". This ESTM must be connected to
the
CDMA Timing Input
on the Cell Master. The Cell Master will search only
for the specified PN.
q
No Trigger
— If both GPS and external timing are unavailable, choose No
Trigger for the PN search.
Data Modulation Type
— In EVDO, the modulation can vary depending upon the data rate.
QPSK, 8-PSK and 16-QAM modulation types are supported. Select
Auto
to demodulate any
type of modulation. To demodulate a specific option, press the appropriate modulation type
soft key.
Advanced Settings
— Advanced settings include the measurement speed and the external
trigger polarity.
q
Meas Speed
— Sets the speed of the measurement to
Normal
,
Fast
, or
Slow
.
q
Ext Trigger Polarity
— The EVDO timing input can use the rising edge or the
falling edge of the ESTM as the zero point in time.
Chapter 18 EVDO Mode
18-3