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5902
Bell 5902 Manuals
Manuals and User Guides for Bell 5902. We have
1
Bell 5902 manual available for free PDF download: Hardware Manual
Bell 5902 Hardware Manual (47 pages)
Brand:
Bell
| Category:
Modem
| Size: 0 MB
Table of Contents
Table of Contents
3
1 Overview
6
2 Industry Canada Certification
7
3 Important Safety Information
9
4 Installation
10
Connecting the Modem
10
Figure 1: 5902 Module Layout
10
Field Wiring
11
RS-232 Serial Port
11
Figure 2: RS-232 Port Connector (DCE)
11
Figure 3: RS-232 Wiring - 5902 (DCE) to DTE
12
Terminal Block
13
Modular Jack
13
Connecting to Dedicated Lines
13
Four Wire Mode
13
Figure 4: Four Wire Network
13
Two Wire Mode
14
Figure 5: Two Wire Network
14
Figure 6: Four Wire RJ-45 Connection
15
Figure 7: Two Wire RJ-45 Connection
15
Figure 8: Four Wire Terminal Block Connection
16
Figure 9: Two Wire Terminal Block Connection
16
Connecting to a Radio
17
Modem Transmitter Output
17
Modem Receiver Input
17
Key Output
17
Radio Carrier Detect Input
17
Wiring Diagrams
17
Figure 10: Typical Connection to Maxon Radio
18
Figure 11: Typical Connection to Johnson Radio
18
Figure 12: Typical Connection to Motorola Radio
18
Configuration Switches
19
RTS/CTS Delay
19
Carrier Detect Delay
20
Carrier Loss Delay
20
Anti-Streaming
21
Soft Carrier Turn-Off
21
Clear-To-Send Hold Time
22
Radio Carrier Detect
22
Duplex
23
Test Mode Selection
23
5 Operation
24
Full Duplex
24
Half Duplex
24
Timing Diagrams
24
Figure 13: Transmit Timing with Soft Carrier Turnoff
25
Figure 14: Receive Timing Without Soft Carrier Turn-Off
26
Figure 15: Receive Timing with Soft Carrier Turn-Off
26
Sample Configurations
27
Full Duplex Back-To-Back Modems
27
Full Duplex Constant Carrier Master
27
Half Duplex Slave for Constant Carrier Master
28
Half Duplex Master or Slave
29
High Speed Connection to Telesafe RTU
29
Normal Speed Connection to Telesafe RTU
30
System Configuration Procedures
31
Full Duplex Point-To-Point Systems
32
Half Duplex Multi-Point Systems
32
Common Problems and Solutions
34
RTS Always on in Half Duplex
34
High Error Rate
34
Modem Receives Data but Never Transmits
35
Other Modems Do Not Receive Data
35
Bad Data at Start of Message
35
Bad Data after End of Message
35
Missing End of Long Message
36
RS LED Always On; All Other Leds off
36
DTE Transmits too Soon after Receive
36
CD LED Always on in Master Modem
36
CD LED Always on in Radio System
37
CD LED Always on in 2 Wire System
37
LED Indicators
37
F Option
38
Supported Communication Parameters
38
M Option
39
Carrier Turn off and the Modbus RTU Protocol
39
M Option Operation
39
6 Maintenance
41
Gain Adjustments
41
Transmitter Adjustment
41
Receiver Adjustment
41
Modem Test Modes
41
Basic Functional Test
42
Tone Transmission Test
42
Full Duplex Loop Back Test
43
Troubleshooting
43
7 Specifications
45
8 Approvals and Certifications
47
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