Case Communications Mayze 24, Reference Manual, Page: 144 / 166

B.1 DTE Port
B.1.1 Interface
The connections are on a 25-way D-type female socket on the rear panel of
the unit. The pin assignments are shown in the following table:
Notes: 1. Pin 7 is signal common for the main DTE and the command terminal.
2. See Technical Guide (link 9).
3. See Technical Guide (link 6). Command &S2 or &S3 must be set.
4. See Technical Guide (link 6).
1 AA 101
7 AB 102
DATA/
CONTROL/
TIMING
FROM/TO
MODEM
DESCRIPTION
ITU-T
REF
EIA
REF PIN
Protective Ground
Signal Ground
1
2 BA 103
3 BB 104
Transmitted Data (TxD) To Data
Received Data (RxD) From Data
4 CA 105
5 CB 106
6 CC 107
20 CD 108
.
2
22 CE 125
8 CF 109
Request To Send (RTS) To Control
Clear To Send (CTS) From Control
Data Set Ready (DSR) From Control
Data Terminal Ready (DTR) To Control
Ring Indicator (RI) From Control
Data Carrier Detect (DCD) From Control
24 DA 113
15 DB 114
17 DD 115
External Tx Clock (XTxC) To Timing
Internal Tx Clock (TxC) From Timing
Internal Rx Clock (RxC) From Timing
9
10
18
CN 141
21 140
23 111
25 142
+12 volt test From Control
–
12 volt test From Control
Local Analogue Loopback To Control
Remote Digital Loopback To Control
Data Rate Select/Indicate (DRS)
2
From/To Control
Test Indicator/Busy Out (TI/BO)
3
From Control
14
16 Command Terminal TxD
4
To
Command Terminal RxD
4
From
X460-306851 Issue 1 B-2 Rev.2