UHF RECEIVER
3-8
July 2000
Part No. 001-2000-720
7. Select parameters, press F2 to accept.
8. Highlight EDIT, press Enter.
9. Highlight FILES, press Enter.
10.Highlight SAVE, press Enter.
11. Type in a valid DOS filename.
For this example site1.dat is used.
12.The file consists of default and CVR one under the
filename of site1.dat.
Adding A CVR To A File
The example used for Site 1 will again be used to
add CVRs to the filename site1.dat.
1. Highlight EDIT, press Enter.
2. Highlight SELECT REPEATER, press Enter.
3. The repeater list shown for this file includes default
and repeater one. These contain the same parame-
ters with the exception that when selected for edit
the programmed repeater can be overwritten and the
data lost.
4. Highlight DEFAULT, press Enter.
5. Highlight EDIT, press Enter.
6. Highlight SETUP PARAMETERS, press Enter.
7. Change the Repeater number and other parameters
as required for this repeater, press F2.
8. Highlight EDIT, press Enter.
9. Highlight FILES, press Enter.
10.Highlight SAVE, press Enter.
11. Repeater 2 is added to the Repeater List in file
site1.dat.
3.3 UHF RECEIVER ALIGNMENT
C
R I T I C A L A D J U S T M E N T
The TCXO must be adjusted within 5 minutes of turn-
ing the AC power on to the repeater. Do not under any
circumstances try to set frequency later on in any of
the tests, as TCXO frequency stability cannot then be
guaranteed.
Refer to Figure 3-28 for component locations.
Refer to Figure 3-30 for equipment needed and setup
diagram. Select "RECEIVER" from the "TEST" menu
in the Repeater Software.
3.3.1 PRETEST
Preset L102, L103, L104, L108, L109, L110,
L140 and L141 tuning screws about 1/4 inch above the
top of the casting.
For 12.5 kHz operation, place jumper plugs P203,
P204 and P205 across pins 2-3 of J203, J204 and J205.
For 25 kHz operation, place jumper plugs P203,
P204 and P205 across pins 1-2 of J203, J204 and J205.
3.3.2 VOLTAGE MEASUREMENTS
Apply power to the Receiver by plugging the 20-
pin cable from the RF Interface Board into J201 (see
Figure 3-28
).
Measure the voltages at the following pins.
U301, pin 1
+6V DC
±
0.2V
U302, pin 1
+12V DC
±
0.4V
U303, pin 1
+12V DC
±
0.4V
U304, pin 1
+12V DC ±0.4V
R402/R403 junction +3.5V DC
±
0.1V
3.3.3 PROGRAM TUNE-UP CHANNEL
1. Using the PC and software, program the Synthesizer
for the Receive frequency.
Содержание CONVENTIONAL VOTING RECEIVER
Страница 2: ... 2 February 1996 Part No 001 3039 505 ...
Страница 4: ... 4 February 1996 Part No 001 3039 505 ...
Страница 16: ...INTRODUCTION 1 6 July 2000 Part No 001 2000 720 ...
Страница 42: ...2 26 July 2000 Part No 001 2000 720 ...
Страница 64: ...UHF RECEIVER 3 22 July 2000 Part No 001 2000 720 ...
Страница 68: ...3 36 July 2000 Part No 001 2000 720 ...
Страница 86: ...800 MHz RECEIVER 4 18 July 2000 Part No 001 2000 720 ...
Страница 90: ...4 22 July 2000 Part No 001 2000 720 ...
Страница 112: ...5 22 July 2000 Part No 001 2000 720 ...
Страница 118: ...INTERFACE BOARD 6 6 July 2000 Part No 001 2000 720 ...
Страница 121: ...INTERFACE BOARD 6 9 July 2000 Part No 001 2000 720 ...
Страница 122: ...INTERFACE BOARD 6 10 July 2000 Part No 001 2000 720 Figure 6 3 RDM INTERFACE BOARD SCHEMATIC 1 OF 2 ...
Страница 123: ...INTERFACE BOARD 6 11 July 2000 Part No 001 2000 720 Figure 6 4 RDM INTERFACE BOARD SCHEMATIC 2 OF 2 ...
Страница 124: ...INTERFACE BOARD 6 12 July 2000 Part No 001 2000 720 ...
Страница 128: ...6 12 July 2000 Part No 001 2000 720 ...
Страница 130: ...6 2 July 2000 Part No 001 2000 720 ...
Страница 134: ...POWER SUPPLIES 8 4 July 2000 Part No 001 2000 720 ...
Страница 146: ...800 MHz RECEIVER CHANNEL FREQUENCY CHART A 12 July 2000 Part No 001 2000 720 ...