Service Manual
8. VHF (136-174 MHz) Information
324
Description of Normal Situations:
1) Voltage at L6001: about 9.1 V.
2) Voltage at L6022: about 5 V.
3) For Q6002, Vbe: about 0.74 V; Vce: about 5.4 V (in the case of no signal reception).
4) For Q6003, Vbe: about 0.76 V; Vce: about 1.4 V; for Q6004, Vbe: about 0.7 V; Vce: about
1.55 V (in the case of no signal reception).
5) Cut off the front-end circuit, and input a 44.85 MHz IF signal at TP6008 to test IF
sensitivity. Normally, the IF sensitivity is -109 dBm.
6) Frequency of Q6006: 47.1 MHz.
7) Frequency of L6039: 18 MHz.
8) Input a -30 dBm RF signal at the antenna connector and test at TP6012. Normally, gain >
11 dB, output signal > -19 dBm.
9) Input a -30 dBm RF signal at the antenna connector and test at R6075 (do not cut off the
back-end circuit). Normally, gain > 1 dB, output signal > -29 dBm.
10) For output signal of C6015, signal frequency: F = RF - IF, signal amplitude > 14 dBm.
11) For input of -80 dBm signal at L6024, gain > 25 dB, output signal > -55 dBm; for input of
-30 dBm signal, output signal < -20 dBm.
12) The input signal at the antenna connector, with the standard tuning information (AF = 1
kHz, FM = 3 kHz), is -47 dBm.
Содержание RDR9000
Страница 1: ...RDR9000U V Service Manual ...
Страница 45: ...Service Manual 6 UHF1 400 470 MHz Information 35 6 4 PCB View PCB View Main Board Top Layer ...
Страница 46: ...Service Manual 6 UHF1 400 470 MHz Information 36 PCB View Main Board Bottom Layer ...
Страница 48: ...Service Manual 6 UHF1 400 470 MHz Information 38 PCB View Rear Board Top Layer ...
Страница 49: ...Service Manual 6 UHF1 400 470 MHz Information 39 PCB View Rear Board Bottom Layer Figure 6 5 PCB View ...
Страница 146: ...Service Manual 7 UHF3 350 400 MHz Information 136 7 4 PCB View PCB View Main Board Top Layer ...
Страница 147: ...Service Manual 7 UHF3 350 400 MHz Information 137 PCB View Main Board Bottom Layer ...
Страница 148: ...Service Manual 7 UHF3 350 400 MHz Information 138 PCB View Control Head Top Layer PCB View Control Head Bottom Layer ...
Страница 149: ...Service Manual 7 UHF3 350 400 MHz Information 139 PCB View Rear Board Top Layer ...
Страница 150: ...Service Manual 7 UHF3 350 400 MHz Information 140 PCB View Rear Board Bottom Layer Figure 7 5 PCB View ...
Страница 248: ...Service Manual 8 VHF 136 174 MHz Information 238 8 4 PCB View PCB View Main Board Top Layer ...
Страница 249: ...Service Manual 8 VHF 136 174 MHz Information 239 PCB View Main Board Bottom Layer ...
Страница 250: ...Service Manual 8 VHF 136 174 MHz Information 240 PCB View Control Head Top Layer PCB View Control Head Bottom Layer ...
Страница 251: ...Service Manual 8 VHF 136 174 MHz Information 241 PCB View Rear Board Top Layer ...
Страница 252: ...Service Manual 8 VHF 136 174 MHz Information 242 PCB View Rear Board Bottom Layer Figure 8 5 PCB View ...
Страница 346: ...Service Manual 11 Packing Guide 336 11 Packing Guide Figure 11 1Packing Guide ...
Страница 352: ...342 ...