
COMSPHERE 3800 Series Modems ± Model 3830
Table C-1
(2 of 3)
Pin
Name
EIA
Circuit
CCITT
Signal
Source
Circuit Function
9 | +10V | ± | ± | ± | Reserved for |
|
|
|
|
| test purposes |
|
|
|
|
| (may be used to |
|
|
|
|
| drive one |
|
|
|
|
| |
|
|
|
|
|
|
10 | ±10V | ± | ± | ± | Reserved for |
|
|
|
|
| test purposes |
|
|
|
|
| (may be used to |
|
|
|
|
| drive one |
|
|
|
|
| |
|
|
|
|
|
|
11 | ± | ± | ± | ± | Unassigned |
|
|
|
|
|
|
12 | CT112 | CI | 112 | DCE | Data Signal Rate |
|
|
|
|
| Select |
|
|
|
|
|
|
13 | ± | ± | ± | ± | Reserved for |
|
|
|
|
| future function |
|
|
|
|
|
|
14 | ± | ± | ± | ± | Reserved for |
|
|
|
|
| future function |
|
|
|
|
|
|
15 | TXC | DB | 114 | DCE | Transmit Clock |
|
|
|
|
|
|
16 | ± | ± | ± | ± | Reserved for |
|
|
|
|
| future function |
|
|
|
|
|
|
17 | RXC | DD | 115 | DCE | Receive |
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|
|
|
| Clock 18 |
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|
|
|
|
|
18 | CT141 | LL | 141 | DTE | Local Loopback |
|
|
|
|
|
|
20 | DTR | CD | 108 | DTE | Data Terminal |
|
|
|
|
| Ready |
|
|
|
|
|
|
21 | CT140 | RL | 140 | DTE | Remote |
|
|
|
|
| Loopback |
|
|
|
|
|
|
August 1998 |