25-Pin To 15-Pin Straight Through Cable - Internal Clock - Digi TransPort User Manual

Description
Ground
Clock (B)
Indication (B)
Transmit Data
(B)
Receive Data (B)
Clock (A)
Control (B)
1 With respect to Digi units
2 Direction depends on whether the Digi unit is clock sink or clock source.
X.21 25-Pin to 15-Pin straight through cable - internal clock
Use this cable to connect an X.21 terminal (such as, an ATM) to the Digi unit. Use this cable when
the Digi unit is the clock source or configured as internal clock.
Signal
Frame Ground (Case)
RxDA
RxDB
TxDA
TxDB
INDB
GND
CTLB
CLKB
CLKA
INDA
CTLA
Digi TransPort User Guide
X.21signal Direction
GND n/a
CLKB
in or out
INDB out
TxDB in
RxDB out
CLKA
in or out
CTLB in
DB 25 - Digi Side
Pin # (DCE)
Shield
3
16
2
14
13
7
19
9
17
5
4
1
DB 25 Pin#
7
9
2
13
14
16
17
2
19
DB 15
Pin # (DTE) Signal
Shield Frame Ground (Case)
4 RxDA
11 RxDB
2 TxDA
9 TxDB
12 INDB
8 GND
10 CTLB
13 CLKB
6 CLKA
5 INDA
3 CTLA
WR44
629