Appendix C
Specifications
Page C-3
SERIAL PORT
Connector: DB-9P (pins)
SERIAL PORT pin assignments:
Baud rate: 1200 to 38,400 baud. Selectable
Format: 8-bit, no parity, 1 stop bit, (8N1)
Flow Control: XON/OFF, Hardware (CTS/DTR), None
PC Cable: Null-Modem, DB-9S (socket) to DB-9S (socket) and
DB-25S
CABLE LENGTH (TWISTED PAIR)
Range: 0-2000ft (0 - 610m)
Accuracy:
±2ft (0.6m) ± 2% ± NVP Uncertainty 0 to 1000 ft (0-305m)
±2ft (0.6m) ± 3% ± NVP Uncertainty 1001 to 2000 ft (306-610m)
NVP (Nominal Velocity of Propagation): 0.50c to 0.99c
Cable Fault Types: Shorts, Opens, Intermediate Impedance
Anomalies
Number Of Faults: End Of Cable and two Intermediate Anomalies
Fault Threshold: User defined, 4% to 10% (7% default)
1
No connection
2 Receive data (input)
3 Transmit data (output)
4 Data terminal ready (output)
5 Signal ground
6
No connection
7
No connection
8 Clear to send (input)
9
No connection
SERIAL PORT
6
9
5
1
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