Motorola P100 Serie Servicehandbuch Seite 66

5-14
a. Connect "RF IN/OUT" port on 8920A to RF adaptor on radio's antenna port using a N-Type to
BNC cable. Connect "AUDIO IN" HI and LO on 8920A to "Rx Audio" on test box using two
BNC to BNC cables. Connect the rest according to Figure 5-2. Radio Tuning Setup.
b. On 8920A, press "Rx" under "SCREEN CONTROL".
c. Using the "CURSOR CONTROL", key in the items below:
i. RF Gen Freq: Frequency Point (F1 – F5) on Tuner
ii. Amplitude: -128dBm
iii. Atten Hold: Off
iv. Output Port: RF Out
v. AFGen1 Freq: 1.0000 kHz
vi. AFGen1 To: 1.5 kHz for 12.5 kHz channel spacing, 3.0 kHz for 25 kHz channel spacing
vii. AFGen2 Freq: 0.0000 kHz
viii. AFGen2 To: Off
ix. Filter 1: 50 Hz HPF
x. Filter 2: 15 kHz LPF
xi. Ext Load R: 24 Ω
2. Initial setup using the R2600 series RF Communications Test Set
a. Connect "RF IN/OUT" port on R2600 series to RF adaptor on radio's antenna port using a
N-Type to BNC cable. Connect "VERT/SINAD DIST/DVM COUNTER IN" on R2600 series to
the single input on audio transformer using one BNC to BNC cable. Connect the rest
according to Figure 5-2. Radio Tuning Setup.
b. On R2600, select "DISP" under "CURSOR ZONE"
i. Meter: SINAD
ii. Mode: STANDARD
c. On R2600, select "RF" under "CURSOR ZONE":
i. RF Control: GENERATE
ii. Preset: --
iii. B/W: NB
iv. Freq: Frequency Point (F1–F5) on Tuner
v. Output Lvl: -128 dBm (refer to step 2 in Section 5.7.2) and increase slowly (-127dBm,
-126dBm...) (refer to step 3 in Section 5.7.2)
vi. Gen RF Out: RF I/O
vii. Modulation Type: FM
d. On R2600, select "AUD" under "CURSOR ZONE":
i. Fixed 1kHz: 1.50 kHz for 12.5kHz channel spacing and 3.0 kHz for 25kHz channel
spacing. Enable (~)
ii. Synth: Disable (x)
iii. DTMF: Disable (x)
iv. External: Disable (x)
Radio Programming and Tuning: Receiver Tuning