Signal Lead Names - JDS Uniphase SmartClass E1 User Manual

Signal Lead Names

Table 51 Signal lead cross reference
Signal Lead
(Direction)
Receive Data
(From DCE)
Transmit Data
(To DCE)
Clear To Send
(From DCE)
Request To Send
(To DCE)
Data Terminal (DTE) Ready
(To DCE)
Data Set (DCE) Ready
(From DCE)
Receiver Line Signal Detect
(From DCE)
Ring Indicator
(From DCE)
Local Loopback
(To DCE)
Remote Loopback
(To DCE)
Test Mode
(From DCE)
Transmitter Signal Element
Timing
(From DCE)
Transmitter Signal Element
Timing
(To DCE)
Receiver Signal Element
Timing
(From DCE)
The signal leads for the supported interfaces use a variety of names. The
names describe the circuits between DTE and DCE, for example TXD is the
transmit data circuit, an output at the DTE and an input at the DCE. As the role
of the test instrument changes, the direction of this signal in the connector
changes. Table 51
signal direction.
Unified Name CCITT
RXD 104
TXD 103
CTS 106
RTS 107
DTR 108.2
DSR 107
DCD 109
RNG 125
(not supported)
LLB 141
RLB 140
TMA 142
STC 114
TXC 113
RXC 115
SmartClass E1 Tester User's Guide
provides a cross reference of signal lead names, including
RS-232
X.21
V.24
RD R
TD T
CTS I
RTS C
DTR -
DSR -
RLSD -
RI -
LL -
RL -
TM -
ST -
TT X
RT S
Appendix B Specifications
Datacom specifications
RS-449
EIA-530 V.35
V.36
RD RD RD
TD SD SD
CTS CTS CS
RTS RTS RS
DTR DTR TR
DSR DSR DM
RLSD RLSD RR
RI CI IC
LL LL LL
RL RL RL
TM TM TM
TC SCT ST
XTC SCTE TT
RC SCR RT
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