Glenayre RL-903 User Manual page 4

RL-903 Receiver
Table of Contents
7
8
9
10 FIGURES ................................................................................................................. 10-1
Page: -ii
Synthesizer and VCO Block-Diagram Description ........................................
6.3
6.3.1 VCO
6 PLL Synthesizer ...............................................................................
.3.2
6.3.3 Reference Oscillators ........................................................................
Programming Logic ..........................................................................
6 .3.4
6.4 IF Board ...........................................................................................................
IF Amplification and FM Detection .................................................
6.4.1
6 .4.2 Audio Processing ..............................................................................
6 .4.3 Squelch and RSSI .............................................................................
6.4.4 Fault Reporting .................................................................................
6.4.5
Keying
Line Driver Circuit (optional) (IF board) ........................................................
6.5
MAINTENANCE ..................................................................................................... 7-1
7 Test Conditions ................................................................................................
.1
7.2 Power Supply (PS/A board unless noted) .......................................................
Local Oscillator Setup (synthesizer board, unless noted) ...............................
7.3
VCO Tuning (synthesizer board unless noted) ...............................................
7.4
7.5 RF and IF Tuning (IF board unless noted) ......................................................
Squelch and RSSI Adjustment (IF board unless noted) ..................................7-6
7.6
Audio Level Adjustment (IF board unless noted) ...........................................
7.7
CHECKOUT AND TROUBLESHOOTING ........................................................ 8-1
Power Supply (PS/A board unless noted) ......................................................
8.1
Audio (IF board unless noted) .........................................................................
8.2
Synthesizer, Frequency, and Reference Oscillator .........................................
8.3
8.4 RF, IF, and Squelch (IF board unless noted) ..................................................
REMOVAL AND REINSTALLATION ................................................................9-1
Access to Internal Assemblies ........................................................................
9.1
9.2
PS/A Board......................................................................................................
9 IF Audio Board................................................................................................
.3
9.4 VCO Board ......................................................................................................
RF Board Assembly ........................................................................................
9 .5
Copyright ©1996 Glenayre
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
6-1
6-2
6-2
6-2
6-2
6-4
6-4
6-4
6-4
6-5
6-5
6-5
7-1
7-1
7-1
7-2
7-2
7-9
8-1
8-1
8-2
8-2
9-1
9-2
9-2
9-2
9-3
Print Date: 12/05/96