Compaq 380 - Manual (Page 15)

Section 1. Features and Specifications
7
RAM Space: 40 K bytes
ROM Space: ROM Flash:
Main Program Memory: 512 K Bytes
Boot Loader Memory: 24 K Bytes
Configuration Memory: 8 K Bytes
Host Serial Port
The RS-232 Host Serial Port provides serial communications between the Reader/Encoder and
the Host Computer. In addition, the Host Serial Port carries DC power from the remote power
pack to the Reader/Encoder. The Host Serial Port is capable of communication speeds of up to
115 K bits/sec.
USB Port
The Host USB 1.1 Port provides communications between the Reader/Encoder and the Host
Computer. The USB Cable, 5-pin mini B Plug, connects to host 4-pin USB Type A Plug, with
10-pin RJ45 and 12V/Ground connector for Power Supply.
Auxiliary Serial Port
The Auxiliary Serial Port provides serial communications and power between the
Reader/Encoder and an external device. The Auxiliary Serial Port is capable of communication
speeds of up to 19.2 Kbits/sec. The port is also capable of carrying +12 VDC at up to 1 A for a
device connected to this port.
Power Input
The Reader/Encoder is powered by a 12 VDC power-pack. The +12 VDC power is carried to
the Reader/Encoder as part of the Host Serial cable.
All other voltages required by the Main PCB are generated onboard as required.
The input connector and cabling carry power to support the Reader/Encoder.
Polarization and Securement of Serial Port Cables
The ports, located at the rear of the Reader/Encoder, use RJ connectors with locking tabs, which
assist in securing the cable to the Reader/Encoder.