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This cable is used to connect the composite or high speed data channel to a DCE device (e.g., modem or DSU/CSU). Since the FastPAD is also a DCE device, a crossover cable is used to connect the two devices.
| DB-25 | V.35 | V.35 Signal | V.35 Description |
|---|---|---|---|
4 | F | RLSD | Receive Line Signal Detect |
6 | H | DTR | Data Terminal Ready |
7 | B | SG | Signal Ground |
8 | C | RTS | Request to Send |
9 | R | RD A | Receive Data A |
10 | T | RD B | Receive Data B |
11 | S | SD B | Send Data B |
12 | P | SD A | Send Data A |
16 | AA | SCT B | Serial Clock Transmit B |
18 | W | SCTE B | Serial Clock Transmit External B |
19 | U | SCTE A | Serial Clock Transmit External A |
20 | E | DSR | Data Set Ready |
21 | X | SCR B | Serial Clock Receive B |
22 | V | SCR A | Serial Clock Receive A |
23 | Y | SCT A | Serial Clock Transmit A |
25 | D | CTS | Clear to Send |
The end of the cable terminated by the DB25 male connector plugs into the composite or high speed data channel connector. The other end of the cable is terminated by a Winchester 34-pin V.35 male connector and plugs into a DCE device. Since this is a crossover cable, the names of the signals on opposite ends of the cable are different. In the Table D-1, the Signal and V.35 Description columns define the signals at the V.35 end of the cable.
To provide an error-free transmission medium, only twisted pair cables should be used. Each differential signal pair uses a twisted pair (e.g., RD A and RD B are wired with one pair on the cable).
This cable is used to connect the composite or high speed data channel to a DTE (terminal) device. Table D-2 shows the connector pin assignments for this cable:
| DB-25 | V.35 | V.35 Signal | V.35 Description |
|---|---|---|---|
8 | F | RLSD | Receive Line Signal Detect |
20 | H | DTR | Data Terminal Ready |
7 | B | SG | Signal Ground |
4 | C | RTS | Request to Send |
12 | R | RD A | Receive Data A |
11 | T | RD B | Receive Data B |
10 | S | SD B | Send Data B |
9 | P | SD A | Send Data A |
13 | AA | SCT B | Serial Clock Transmit B |
21 | W | SCTE B | Serial Clock Transmit External B |
22 | U | SCTE A | Serial Clock Transmit External A |
6 | E | DSR | Data Set Ready |
18 | X | SCR B | Serial Clock Receive B |
19 | V | SCR A | Serial Clock Receive A |
14 | Y | SCT A | Serial Clock Transmit A |
5 | D | CTS | Clear to Send |
The end of the cable terminated by the DB25 male connector plugs into the composite or high speed data channel connector. The other end of the cable, terminated by a Winchester 34-pin V.35 female connector, plugs into a DTE device.
In Table D-2, the Signal and V.35 Description columns explain the signals at the V.35 end of the cable.
In order to provide an error-free transmission medium, only twisted pair cables should be used. Each differential signal pair uses a twisted pair (e.g., RD A and RD B are wired with one pair on the cable).
This cable is used to connect the composite or high speed data channel to a DCE device like a modem or DSU/CSU. Since the FastPAD is also a DCE device, a cross-over (null modem) cable is used to connect the two devices. Table D-3 shows the connector pin assignments for this cable:
| DB-25 | V.11 | V.11 Signal | V.11 Description |
|---|---|---|---|
9 | 4 | R A | Receive A |
10 | 11 | R B | Receive B |
7 | 8 | G | Signal Ground |
12 | 2 | T A | Transmit A |
11 | 9 | T B | Transmit B |
22 | 6 | S A | Signal Element Timing A |
21 | 13 | S B | Signal Element Timing B |
23 | 5 | I A | Indicate A |
16 | 12 | I B | Indicate B |
13 | 3 | C A | Control A |
13 | 10 | C B | Control B |
The end of the cable terminated by the DB25 male connector plugs into the composite or high speed data channel connector. The other end of the cable is terminated with a DB15 V.11 male connector and plugs into a DCE device.
Since this a cross-over cable, the names of the signals on opposite ends of the cable are different. In Table D-3, the Signal and V.11 Description columns define the signals at the V.11 end of the cable terminated by a DB15 male connector.
To provide error free transmission medium, only twisted pair cables should be used. Each differential signal pair uses a twisted pair (e.g., RD A and RD B are wired with one pair on the cable).
This cable is used to connect the composite or high speed data channel to a DTE (terminal) device. Table D-4 shows the connector pin assignments for this cable:
| DB-25 | V.11 | V.11 Signal | V.11 Description |
|---|---|---|---|
12 | 4 | R A | Receive A |
11 | 11 | R B | Receive B |
7 | 8 | G | Signal Ground |
9 | 2 | T A | Transmit A |
10 | 9 | T B | Transmit B |
19 | 6 | S A | Signal Element Timing A |
18 | 13 | S B | Signal Element Timing B |
14 | 5 | I A | Indicate A |
13 | 12 | I B | Indicate B |
23 | 3 | C A | Control A |
16 | 10 | C B | Control B |
The end of the cable terminated by the DB25 male connector plugs into the composite or high speed data channel connector. The other end of the cable is terminated with a DB15 V.11 male connector and plugs into a DTE device.
In Table D-4, the Signal and V.11 Description columns define the signals at the V.11 end of the cable.
To provide error free transmission medium, only twisted pair cables should be used. Each differential signal pair uses a twisted pair (e.g., RD A and RD B are wired with one pair on the cable).
This cable is used to connect the composite or high speed data channel to a DCE device like a modem or CSU/DSU. Since the FastPAD is also a DCE device, a cross-over (null modem) cable is used to connect the two devices. Table D-5 shows the connector pin assignments for this cable:
| DB-25 | DB-37 | RS-449 Signal | V.11 Description |
|---|---|---|---|
4 | 13 | RR A | Receiver Ready A |
6 | 12 | TR A | Terminal Ready B |
7 | 7 | RS A | Request to Send A |
9 | 8 | RD A | Receive Data A |
10 | 24 | RD B | Receive Data B |
12 | 4 | SD A | Send Data A |
11 | 22 | SD B | Send Data B |
16 | 23 | ST B | Send Timing B |
18 | 35 | TT B | Terminal Timing B |
19 | 17 | TT A | Terminal Timing A |
20 | 11 | DM A | Data Mode A |
21 | 26 | RT B | Receive Timing B |
22 | 8 | RT A | Receive Timing A |
23 | 5 | ST A | Send Timing A |
7 | 19 | SG A | Signal Ground A |
7 | 20 | RC A | Receive Common A |
7 | 25 | RS B | Request to Send B |
7 | 29 | DM B | Data Mode B |
7 | 30 | TR B | Terminal Ready B |
7 | 31 | RR B | Receiver Ready B |
7 | 37 | SC A | Send Common A |
The end of the cable terminated by the DB25 male connector plugs into the composite or high speed data channel connector. The other end of the cable is terminated with a DB37 RS449 male connector and plugs into a DCE device. Since this a cross-over cable, the names of the signals on opposite ends of the cable are different. In the Table D-5, the RS449 Signal and RS449 Description columns define the signals at the RS449 end of the cable terminated by a DB37 male connector.
To provide error free transmission medium, only twisted pair cables should be used. Each differential signal pair uses a twisted pair (e.g., RD A and RD B are wired with one pair on the cable).
This cable is used to connect any FastPAD low speed data channel, high speed data channel or composite to a DCE device like a low speed modem. Since the FastPAD is also a DCE device, this is a cross-over cable. Table D-6 shows the connector pin assignments for this cable:
| DB-25 | DB-25 | Circuit | RS-232C Description |
|---|---|---|---|
7 | 7 | AB | Signal Ground |
2 | 3 | BB | Receive Data |
3 | 2 | BA | Transmit Data |
4 | 8 | CF | Receive Line Signal Detect |
8 | 4 | CA | Request to Send |
6 | 20 | CD | Data Terminal Ready |
20 | 6 | CC | Data Set Ready |
15 | 25 | RC | Receive Clock (DTE) |
17 | 24 | TC | Transmit Clock (DTE) |
24 | 17 | DD | Receive Clock (DCE) |
25 | 15 | DB | Transmit Clock (DCE) |
Both ends of the cable are terminated by DB25 male connectors. One end plugs into an FastPAD connector and the other plugs into another DCE device.
Since this a cross-over cable, the names of the signals on opposite ends of the cable are different. In Table D-6, the Circuit and RS232C Description columns define the signals found on pins in column 2.
This cable is used to connect devices to a FRAM-01 expansion module that is installed in the FastPAD. The triplex cable has a 68-pin male connector on the end that attaches to the FastPAD. There are three 25-pin connectors on the other end of the cable that are used to attaches devices to the FastPAD In addition to RS-232, the cable supports all three electrical interfaces (i.e., V.11, V.35, and RS-449) can be selected by the FRAM-01 interface adapter cards. Table D-7 shows the connector pin assignments for 68-pin connector side of the cable.
| J4 64pin | DB-25 Pin | Description |
|---|---|---|
1 | J1/19 | V.35: Serial Clock Receive A/V.11: Signal Element Timing A/RS-449: Terminal Timing A |
2 | J1/18 | V.35: Serial Clock Receive B/V.11: Signal Element Timing B/RS-449: Terminal Timing B |
3 | J2/19 | V.35: Serial Clock Receive A/V.11: Signal Element Timing A/RS-449: Terminal Timing A |
4 | J2/18 | V.35: Serial Clock Receive B/V.11: Signal Element Timing B/RS-449: Terminal Timing B |
5 | J3/19 | V.35: Serial Clock Receive A/V.11: Signal Element Timing A/RS-449: Terminal Timing A |
6 | J3/18 | V.35: Serial Clock Receive B/V.11: Signal Element Timing B/RS-449: Terminal Timing B |
7 | J1/22 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
8 | J1/21 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
9 | J2/22 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
10 | J2/21 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
11 | J3/22 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
12 | J3/21 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
13 | J1/24 | RS232: Receive Clock (DCE) |
14 | J2/24 | RS232: Receive Clock (DCE) |
15 | J3/24 | RS232: Receive Clock (DCE) |
16 | J1/9 | V.11: Transmit A/V.35 Send Data A |
17 | J1/10 | V.11: Transmit B/V.35 Send Data B |
18 | J2/9 | V.11: Transmit A/V.35 Send Data A |
19 | J2/10 | V.11: Transmit B/V.35 Send Data B |
20 | J3/9 | V.11: Transmit A/V.35 Send Data A |
21 | J3/10 | V.11: Transmit B/V.35 Send Data B |
22 | J1/12 | V.11: Receive A/V.35 Receive Data A |
23 | J1/11 | V.11: Receive B/V.35 Receive Data B |
24 | J2/12 | V.11: Receive A/V.35 Receive Data A |
25 | J2/11 | V.11: Receive B/V.35 Receive Data B |
26 | J3/12 | V.11: Receive A/V.35 Receive Data A |
27 | J3/11 | V.11: Receive B/V.35 Receive Data B |
28 | J1/5 | Clear to Send |
29 | J2/5 | Clear to Send |
30 | J3/5 | Clear to Send |
31 | J1/4 | Request to Send/RS449: Receiver Ready A |
32 | J2/4 | Request to Send/RS449: Receiver Ready A |
33 | J2/4 | Request to Send/RS449: Receiver Ready A |
34 | J1/6 | Data Set Ready/RS449: Terminal Ready B |
35 | J2/6 | Data Set Ready/RS449: Terminal Ready B |
36 | J3/6 | Data Set Ready/RS449: Terminal Ready B |
37 | J1/20 | Data Terminal Ready |
38 | J2/20 | Data Terminal Ready |
39 | J3/20 | Data Terminal Ready |
40 | J1/8 | Data Carrier Detect |
41 | J2/8 | Data Carrier Detect |
42 | J3/8 | Data Carrier Detect |
43 | J1/14 | V.11: Indicate A/V.35: Serial Clock Transmit A |
44 | J1/13 | V.11: Indicate B/V.35: Serial Clock Transmit B |
45 | J2/14 | V.11: Indicate A/V.35: Serial Clock Transmit A |
46 | J2/13 | V.11: Indicate B/V.35: Serial Clock Transmit B |
47 | J3/14 | V.11: Indicate A/V.35: Serial Clock Transmit A |
48 | J3/2,13 | V.11: Indicate B/V.35: Serial Clock Transmit B |
49 | J1/23 | RS449: Send Timing A/V.11: Control A |
50 | J1/16 | RS449: Send Timing B/V.11: Control B |
51 | J2/23 | RS449: Send Timing A/V.11: Control A |
52 | J2/16 | RS449: Send Timing B/V.11: Control B |
53 | J3/23 | RS449: Send Timing A/V.11: Control A |
54 | J3/16 | RS449: Send Timing A/V.11: Control B |
55 | J1/15 | RS232: Receive Clock (DCE) |
56 | J2/15 | RS232: Receive Clock (DCE) |
57 | J3/15 | RS232: Receive Clock (DCE) |
58 | J1/25 | RS232: Transmit Clock (DCE) |
59 | J2/25 | RS232: Transmit Clock (DCE) |
60 | J1/3 | RS232: Receive Data |
61 | J2/3 | RS232: Receive Data |
62 | J3/3 | RS232: Receive Data |
63 | J1/2 | RS232: Transmit Data |
64 | J2/2 | RS232: Transmit Data |
65 | J3/25 | RS232: Transmit Clock (DCE) |
66 | J1/17 | RS232: Transmit Clock (DTE) |
67 | J2/17 | RS232: Transmit Clock (DTE) |
68 | J3/17 | RS232: Transmit Clock (DTE) |
Table D-8 shows the pin assignments for the DB-25 connectors.
| J1 DB25 Pin | J2 DB-25Pin | J3 DB25Pin | Description |
|---|---|---|---|
2 | 2 |
| RS232: Transmit Data |
|
| 2,13 | V.11: Indicate B/V.35: Serial Clock Transmit B |
3 | 3 | 3 | RS232: Receive Data |
4 | 4 | 4 | Request to Send/RS449: Receiver Ready A |
5 | 5 | 5 | Clear to Send |
6 | 6 | 6 | Data Set Ready/RS449: Terminal Ready B |
8 | 8 | 8 | Data Carrier Detect |
9 | 9 | 9 | V.11: Transmit A/V.35 Send Data A |
10 | 10 | 10 | V.11: Transmit B/V.35 Send Data B |
11 | 11 | 11 | V.11: Receive B/V.35 Receive Data B |
12 | 12 | 12 | V.11: Receive A/V.35 Receive Data A |
13 | 13 | 13 | V.11: Indicate B/V.35: Serial Clock Transmit B |
14 | 14 | 14 | V.11: Indicate A/V.35: Serial Clock Transmit A |
15 | 15 | 15 | RS232: Receive Clock (DCE) |
16 | 16 | 16 | RS449: Send Timing B/V.11: Control B |
17 | 17 | 17 | RS232: Transmit Clock (DTE) |
18 | 18 | 18 | V.35: Serial Clock Receive B/V.11: Signal Element Timing B/RS-449: Terminal Timing B |
19 | 19 | 19 | V.35: Serial Clock Receive A/V.11: Signal Element Timing A/RS-449: Terminal Timing A |
20 | 20 | 20 | Data Terminal Ready |
21 | 21 | 21 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
22 | 22 | 22 | V.35 Serial Clock Transmit External B/RS-449: Receive Timing B |
23 | 23 | 23 | RS449: Send Timing A/V.11: Control A |
24 | 24 | 24 | RS232: Receive Clock (DCE) |
25 | 25 | 25 | RS232: Transmit Clock (DCE) |
Table D-9 shows the connector pin assignments for this cable.
| DB25 Pin# | DB25 Pin# | V.35 Signal | V.35 Description |
|---|---|---|---|
4 | 8 | RTS | Request to Send |
6 | 20 | DSR | Data Set Ready |
7 | 7 | SG | Signal Ground |
8 | 4 | RLSD | Receive Line Signal Detect |
9 | 12 | SD A | Send Data A |
10 | 11 | SD B | Send Data B |
11 | 10 | RD B | Receive Data B |
12 | 9 | RD A | Receive Data A |
13 | 16 | SCT B | Serial Clock Transmit B |
14 | 23 | SCT A | Serial Clock Transmit A |
18 | 21 | SCR B | Serial Clock Receive B |
19 | 22 | SCR A | Serial Clock Receive A |
20 | 6 | DTR | Data Terminal Ready |
21 | 18 | SCTE B | Serial Clock Transmit External B |
22 | 19 | SCTE A | Serial Clock Transmit External A |
Crossed Pairs: 9-10, 11-12, 13-14, 18-19, 21-22, 16-23, 6-20, 4-8
Posted: Thu Jan 25 13:27:46 PST 2001
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