FIELD LEVEL TEST MODES AND PROCEDURES:
Signal Quality Error (SQE) Test
64
68P80401P05
8.5
Signal Quality Error (SQE) Test
Use this test on a unit having any of the following symptoms: No service failures or poor SQE/RSSI
(poor performance in known good coverage area).
Place unit
in Debug Mode (see
Entering Debug Mode
). Press
Trace
to monitor the
SQE
&
TX
level.
Press
RF
in the R-2660 and arrow down to
Gen:
.
Verify that it is set to
-70dBm
.
Verify that the SQE is
greater than
26
.
Verify that
the unit can complete an
interconnect call. Press
End/Home
until the unit displays
Ready
. Press
Intercon-
nect
(3:1 or 6:1) and
Start
on the R-2660. Wait for the
green LED to light. Press
Send
on the unit.
Note:
Leave call connected for
the next test.
Fail
Power
up the unit. Enter
Initial Registration mode (see
Operating the R-2660
.) Press
Start
.
The
Call SEQ
: 1 thru 6 lights up
when unit has
registered.
Replace the
Main board.
Notes:
1.
Watch unit for resetting during this procedure.
2.
Master reset can be completed on the unit by pressing
Menu,
Settings, Security
.
3.
Registration and calls might take over 1 minute to complete.
4.
See the
Strong
Signal
Environment
section in Chapter 7.
Pass
Pass
Change
Gen:
to -80 dBm, and
check the SQE Reference chart to
verify the unit’s SQE per
Gen:
output using the
chart.
Pass
Unit passed test. Look for
system, coverage, accessory, or
software problems.
Pass
Fail
SQE Reference Chart
Note:
Gen levels in the SQE chart
include RF Adapter losses.
Gen
SQE Level
-70 dBm
>26
-80 dBm
>25
-90 dBm
>23
-100 dBm
>20
Fail
Perform the
Registration/Call test.
Perform the Registra-
tion/Call test.
Replace the
Main board.
Connect the regulated battery
eliminator to the unit to be
tested. Set the power supply 7.0
Vdc.
Fail
Set up the R-2660 for
i
DEN
Mobile operation, and connect the
unit to the RF IN/OUT
connector. See Figure 7-1 on page
7-3.