Tracking Data; Test Frequencies - Ericsson ORION LBI-39175A Service section Manual

TRACKING DATA

The radio personality
information bytes known as Tracking Data, which allow
the radio computer to calibrate transmitter power,
modulation deviation, and squelch threshold. Normally,
no adjustments need be made to the radio to maintain
specified limits for the above parameters, since the radio
computer makes the necessary adjustments using the
Tracking Data established at the factory.
should Transmitter PA, Synthesizer, or Logic Circuit
boards be replaced, it may be necessary to alter the
Tracking Data to re-set these parameters properly.
Parameter
f1L (MHz)
f1H (MHz)
f2L (MHz)
f2H (MHz)
f3L (MHz)
f3H (MHz)
f4L (MHz)
f4H (MHz)
Parameter
f1L (MHz)
f1H (MHz)
f2L (MHz)
f2H (MHz)
f3L (MHz)
f3H (MHz)
f4L (MHz)
f4H (MHz)
contains certain
However,
Table 2 - Tracking Data Frequencies (Low Split)
RF Power
136.0000
N/A
140.0050
N/A
144.0050
N/A
148.0050
153.0000
Table 3 - Tracking Data Frequencies (High Split)
RF Power
150.0000
N/A
155.5050
N/A
161.5050
N/A
167.5050
174.0000
Furthermore, if the Tracking Data is lost, specialized
procedures are required to load new Tracking Data.
therefore, it is VERY IMPORTANT to establish a record
of the Tracking Data of every radio as it is received from
the factory. The frequencies at which Tracking Data is
established are given in the "Test Frequencies" section.

TEST FREQUENCIES

The following frequencies are those for which
Tracking Data is established, and are used as Test
Frequencies:
Modulation
Deviation
136.0000
139.9950
140.0050
143.9950
144.0050
147.9950
148.0050
153.0000
Modulation
Deviation
150.0000
155.4950
155.5050
161.4950
161.5050
167.4950
167.5050
174.0000
LBI-39175A
Squelch Set
136.0000
N/A
140.0050
N/A
144.0050
N/A
148.0050
153.0000
Squelch Set
150.0000
N/A
155.5050
N/A
161.5050
N/A
167.5050
174.0000
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