Compaq Portable 286 Compaq Portable Computer, Compaq Plus Personal Computer, a - Page 122
Table 8.9-1. 25 Pin Asynchronous Connector, Data Set Ready DSR
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Table 8.9-1. 25 Pin Asynchronous Connector Signal Names and Description Pin Number Protective Ground 1 Transmit Data (TX) 2 Receive Data (RX) 3 Request To Send (RTS) 4 Clear To Send (CTS) 5 Data Set Ready (DSR) 6 Signal Ground (GND) 7 Carrier Detect (CD) 8 + Transmit current loop data (20 mA) 9 + 5 VDC 200 mA (fuse on board) 10 - Transmit current loop return (20 mA) 11 Reverse Channel Option 12 No Connection 13 No Connection 14 No Connection 15 No Connection 16
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Table 8.9-1. 25 Pin Asynchronous Connector
==============================================================================
Signal Names and Description
Pin Number
------------------------------------------------------------------------------
Protective Ground
1
Transmit Data (TX)
2
Receive Data (RX)
3
Request To Send (RTS)
4
Clear To Send (CTS)
5
Data Set Ready (DSR)
6
Signal Ground (GND)
7
Carrier Detect (CD)
8
+ Transmit current loop data (20 mA)
9
+ 5 VDC 200 mA (fuse on board)
10
- Transmit current loop return (20 mA)
11
Reverse Channel Option
12
No Connection
13
No Connection
14
No Connection
15
No Connection
16