Appendix B
Specifications
Datacom specifications
118
SmartClass E1 Tester User’s Guide
Datacom specifications
The following sections contain specifications related to the Datacom testing
option.
Supported interface
standards
lists the supported Datacom test interfaces and circuits.
About pin assignments
All of the signals necessary for the supported interfaces are mapped to pins on
the universal Datacom connector. The following sections describe the pin
assignments for the supported interfaces.
RS-232/V.24 pin assignments
lists pin assignments for the RS-232/V.24 interface.
Table 45
Datacom interface specifications
Interface Standard
Supported Circuits
RS-232/V.24
BA, BB, CA, CB, DD, CF, DB, DD, LL, RL, CD, DA,
and TM
EIA-530
EIA-422-B: BA, BB, CA, CB, CC, CD, CF, DA, DB,
and DD
EIA-423-B: LL, RL, and TM.
RS-449/V.36
EIA-422-B: SD, RD, RS, CS, DM, TR, RR, RT, ST,
and TT
EIA-423-B: LL, RL, and TM.
V.35
Balanced clock and data circuits
EIA-232/V.24 control circuits
306: SCT, SCTE, SCR, SD, and RD
V.35: 103, 104, 114, and 115
V.28: 105, 106, 107, and 109
X.21
V.11: R, I, S, T, C
a
, and X
b
a. With cable CB-44390 or CB-44346
b. With cable CB-44391 or CB-44345
Co-directional Timing
AMI with block violation for Octet timing
Contra-directional Timing
and Centralized Timing
Data - AMI with 100% duty cycle
Clock - AMI with 50% duty cycle
Table 46
RS-232/V.24 pin assignments
Pin
Signal Description
Signal Source
CCITT Circuit
1
Signal Ground
N/A
102
2
Transmitted Data
DTE
103
3
Received Data
DCE
104
4
Request to Send
DTE
105
5
Clear to send
DCE
106
6
Data Set Ready
DCE
107
7
Signal Ground
N/A
102
Summary of Contents for SmartClass E1
Page 1: ...SmartClass E1 and E1 Datacom Testers User s Guide...
Page 2: ......
Page 3: ...SmartClass E1 and E1 Datacom Testers User s Guide...
Page 6: ...iv SmartClass E1 Tester User s Guide...
Page 12: ...Table of Contents x SmartClass E1 Tester User s Guide...
Page 16: ...About this Guide Conventions xiv SmartClass E1 Tester User s Guide...
Page 32: ...Chapter 1 Getting Started Using the keypad 16 SmartClass E1 Tester User s Guide...
Page 38: ...Chapter 2 Instrument Settings Restoring factory defaults 22 SmartClass E1 Tester User s Guide...
Page 66: ...Chapter 4 E1 Testing Testing MFC R2 Signaling 50 SmartClass E1 Tester User s Guide...
Page 118: ...Chapter 7 Test Results Viewing saved results 102 SmartClass E1 Tester User s Guide...
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