Motorola R-2002A Manual page 229

Communications system analyzer
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A. INITIAL PARAMETERS
~elect t~e INITI~L ~
ARAMETERS screen by key-
mg a 1 m the mam Stgnaling Sequence screen.
~ID
Entet
t~e
System ID that the mobile expects. If
mcorrect, or If not known, the mobile will still func-
tion but the mobile will give a ROAM indication.
FOCC Enter the FOCC (data channel) desired. The
mobile will scan the channels 313-354 as their home
system range. Mobiles configured for non-wireline
carriers consider channels 313-333 as their home sys-
tem range.
FVC
I)
This channel is the first in the series of
channels to be tested. The other three FVC selections
are used only in the cell and mobile initiated se-
quences.
FVC increment This parameter specifies the chan-
nel spacing for the automatic handoffs. So if this is
100, then every tOOth channel will be checked.
:RI~TER
( 1 =YES, 0 =NO) Select a 1 if a printer
ts desired, and select 0 if not. The printer is required
to
hav~ RS232~
1200 baud capability. See Appendix
G. for mstrucuons on setting up the optional Epson
RX-80 printer, Motorola part no. RT-RX80/8148.
B. AUTO TEST OPERATION
Connect the R2008D/R2010D Mod Out jack to the
Tx Audio jack on the junction box.
<?n the main Signaling Sequence screen, key in selec-
tiOn 5 to access the auto test mode. The screen will in-
struct the operator to adjust the 1 kHz level too a 2.0
to
~.5 v~lt
output. The purpose of this is to input suf-
ficient signal so the transceiver will begin to go into
deviation limiting on each channel tested.
Key in a 2
to
begin the test.
A WAIT message will be displayed as the R2008D/
R2010D adjusts the 45 MHz offset. At this point, the
R2008D/R20lOD is sending out an overhead message
stream on the FOCC, as a cell would.
14
This portion of the sequence is very similar to the
MOBILE INITIATED test described earlier. The
R2008D/R2010D is waiting for a service request mes-
sage from the mobile under test. The R2008D/
R2010D now will display a SEND TEL II WHEN IN
SVC message. When the NO SVC indicator on the
car phone goes out, start a call from the mobile.
The R2008D/R20lOD will now display SAT devia-
tion (not from the 1kHz Mod Out), output power
and frequency deviation of the mobile on FVC #1).
The R2008D/R20lOD will wait for the data to
stabilize, and then print it out if a printer was
selected. Then, the R2008D/R2010D will issue a
release order to the mobile, and resume transmission
of overhead data on the FOCC.
After a short delay, to allow the mobile to firmly lock
onto the data stream, the R2008D/R2010D will page
the mobile using the Mobile ID number sent by the
mobile in the earlier part of the test. When the mobile
begins to ring, the operator has lO seconds to answer
before the 10 kHz signaling tone interferes with the
SAT and deviation measurements.
The R2008D/R2010D will now display frequency er-
ror, power output and 1 kHz modulation deviation
from the mobile under test.
After a short delay, to allow the data to stabilize, the
R2008D/R2010D will execute handoff orders to step
the mobile through the FVC range up to channel666.
The R2008D/R2010D will display and send the
measured data to the printer for each channel tested.
By looking at trends in the data over the range of
channels, a troubleshooter will be able to narrow
down the faulty functional blocks in the mobile
under test, as well as provide an historical record of
the mobile for customer assurance.

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