Power Level Setting; Testing Signaling At Threshold Level - Motorola R2010D Operator's Manual

D. POWER LEVEL SETTING
1) Connect R2008D to transceiver unit through the
junction box. (Refer to Fig. 13.)
2) Set R2008D to Power Monitor. Through the
manual test mode execute the following com-
mands:
01 Suspend
09 Load synthesizer (enter desired channel)
07 Carrier on
10
Set attenuator (set to 0 highest power)
NOTE: Power levels are as follows:
ATTENUATOR
0
1
2
3
4
5
6
7
WATTS
3.0
1.2
.48
.19
76mW
30mW
12mW
4.8mW
dBm
34.8
30.8
26.8
22.8
18.8
14.8
10.8
6.8
3) Note power level in GEN MON display. For the
lower power levels, use the R2008D spectrum
analyzer.
4) Select the spectrum analyzer display and note the
relative power level in dB.
5) In the Signaling Sequence display, execute
manual mode command 10, Set Attenuator
(select desired attenuation).
6) Determine power level by using the spectrum
analyzer display. Note the relative power level in
dB. Power output should decrease in 4 dB steps
as transceiver attenuator setting is increased
through the manual test mode commands.
E. TESTING SIGNALLING AT
THRESHOLD LEVEL
It is sometimes desirable to verify the operation of
the mobile under weak signal conditions. This can be
done by using the following procedure.
16
1) Connect the R2008D to the transceiver unit via
the junction box as in Fig. 13.
2) Turn off the Duplex Generator and disconnect
the output from the RF tee.
3) Select the Generator function and execute the
following manual mode commands:
01 Suspend
09 Load synthesizer (enter the desired channel)
4) Set the R2008D to generate on the desired fre-
quency (870 MHz
+
0.03
X
channel #), ex.
879.99 MHz = channel 333.
5) Select the DVM display on the ·R2008D and use a
scope or meter ·probe to access the RSSI test
point on the junction box.
6) Set the output level on the R2008D to the desired
signaling level. A -108 dBm level is the accepted
signaling threshold level. Note the voltage at the
RSSI test point.
7) Connect the R2008D to the transceiver unit via
the variable RF tee as in the Cell and Mobile In-
itiated Sequence tests. Reconnect the control
head to the transceiver unit.
8) Insert a 60 dB attenuator {part no. 58-80314B21)
in series with the Duplex Generator output. Set
the variable tap on the RF tee to fully in (maxi-
mum coupling).
9) On the Initial Parameters screen, select one of
the Forward Voice Channels (FVC) to be the
same as the desired FOCC (data channel).
10) Select either the Cell or Mobile Initiated Se-
quences. Executed the test and handoff to the
. FVC loaded with the FOCC channel above.
11) Using a temporary exit from the Signaling Se-
quence screen, select the DVM display. Monitor
the RSSI voltage and adjust the tap on the RF tee
for the same RSSI voltage noted earlier. The
signal being fed to the transceiver unit is now at
the desired threshold level.
12) Continue with any of the Cell Initiated, Mobile
Initiated or Auto Test sequences to test the per-
formance of the mobile under threshold signal-
ing conditions.