Service manual

32
Connecting for local PC control and management
2
Installation
S
TELLAR
and PC
connectors
The following table shows the S
TELLAR
and PC connectors for local RS-232
communication and their pin allocations:
PC
S
TELLAR
Signal name PC, 9-pin
Sub-D male
PC, 25-pin
Sub-D male
S
TELLAR
,9-
pin Sub-D
female
Use
- pin 1 Pin 8 pin 1 Not connected
RxD (PC input) pin 2 Pin 3 pin 2 Data from the S
TELLAR
TxD (PC output) pin 3 Pin 2 pin 3 Data from the PC
DTR (PC output) pin 4 Pin 20 pin 4 Ready signal from the PC
GND pin 5 Pin 7 pin 5 Signal ground
DSR (PC input) pin 6 Pin 6 pin 6 Ready signal from the S
TELLAR
RTS (PC output) pin 7 Pin 4 pin 7 Handshake signal asserted by the
PC
CTS (PC input) pin 8 Pin 5 pin 8 Handshake signal asserted by the
S
TELLAR
- pin 9 Pin 22 pin 9 Not connected
1
9
25
131
14
1
9