HP 3000 9X9/KS Site Preparation And Requirements Manual page 62

Table B-23.
Description
Communications Specifications:
RS-232 Port Pinout
Communications
Protocol
B-20
A2996A PowerTrust UPS Specifications
Pin 1 - Receive Data
Pin 2 - Transmit Data
Pins 3-8 Reserved (Do not use)
Pin 9 - Signal Ground
8 Data Bits
1 Stop Bit
No Parity
Baud rate is 1200
. (Continued)
Specification