Specifications
Cable, CompactFlash and Accessory Specifications
A-8
2/4-Port Serial NIM Card Port
The High Speed Serial NIM card, as shown in Figure A-6, provides a WAN connection to four
different types of DTEs: DB-15, 25, 37, and V.35. This interface can support dual and quad traffic
up to 8 Mbps.
Figure A-6 High Speed Serial NIM Port
Refer to Figure A-7 through Figure A-11 for pinout assignments.
Figure A-7 X.21 DTE Pin Assignments
Pin 1
Pin 68
68-pin Serial
19
27
21
26
3
11
5
10
4
7
6
8
15
16
9
14
4
11
2
9
3
10
5
12
6
13
8
1
Receive0+
Receive0-
Transmt0+
Transmit0-
Control0+
Control0-
Indication0+
Indication0-
Timing0+
Timing0-
Signal GND
Shield GND
Signal GND
37
45
39
44
38
41
40
42
49
50
43
48
J1 J2
J3
J4
X
.
21
DTE
J1 - 68-pin male SCSI III type connector
J2...J5 - DB-15 type male connector
- Indicates Twisted Pair
Notes:
1
.
2. Shield GND is braid on braided cable
3. Shield GND is drain wire on foil shield cabl
e
4. Braid or foil must enter and make contact
inside metal connector hood
5. All connectors must be metal
6. Pins not shown are unused
4
11
2
9
3
10
5
12
6
13
8
1
Receive1+
Receive1-
Transmt1+
Transmit1-
Control1+
Control1-
Indication1+
Indication1-
Timing1+
Timing1-
Signal GND
Shield GND
Signal GND
4
11
2
9
Receive2+
Receive2-
Transmt2+
Transmit2-
Ctl2+
PORT 1
PORT 2
19
27
21
26
20
23
22
24
31
32
25
30
53
61
55
60
54
57
56
58
65
66
59
64
J4
J5
4
11
2
9
3
10
5
12
6
13
8
1
Receive2+
Receive2-
Transmt2+
Transmit2-
Control2+
Control2-
Indication2+
Indication2-
Timing2+
Timing2-
Signal GND
Shield GND
Signal GND
4
11
2
9
3
10
5
12
6
13
8
1
Receive3+
Receive3-
Transmt3+
Transmit3-
Control3+
Control3-
Indication3+
Indication3-
Timing3+
Timing3-
Signal GND
Shield GND
Signal GND
J1: 68-pin male SCSI II type connector
J2 - J5: DB-15 type male connector