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~lr~!HI,
Congratulations on your purchase of the HP 82 718A Expansion Pod. This device attaches directly to an
HP-7S portable computer and enhances its abilities as a powerful tool for portable data collection
applications.
This introductory section of the manual will highlight some of the key features and
capabilities you now have at your fingertips.
HP 82718A HARDWARE
The combination of the HP 82718A with your HP-7S is a single, rugged, integrated package with data
communications capability and a large memory for program and data storage. The HP 82718A connects
to the right-most ROM port on the front of your HP-7S, leaving two ports available for up to 64 kbytes
of your ROM-based application software.
Built-In Modem
The built-in modem is a direct-connect 300 baud modem compatible with Bell 103/113 modems. It has
originate, answer, and auto-answer capability, and can dial manually or automatically using either tones
or pulses. The modem supports both XON/XOFF and ENQ/ ACK handshake protocols, and several parity
options (odd, even, always I, always 0, or none). Two modular RJ 11 jacks enable you to use the modem as
an auto-dialer or use a telephone as a line monitor.
Electronic Disc
The HP 82718A Option 032 or 064 provides either 32 or 64 kbytes of additional random access memory
(RAM). This additional RAM simulates a mass storage device such as a digital cassette or disc drive.
Unlike a mechanical device, however, you get fast data transfer and rugged, reliable operation.
HP 82718A SOFTWARE
The HP 82718A contains 16 kbytes of ROM-based software that provides 34 new BASIC keywords to the
HP-7S's already powerful BASIC language, plus 22 commands that control the modem.
These S6
commands give the HP-7S the ability to send data to and receive data from the modem, copy files into
and out of the electronic disc, and decode two types of bar code labels. The software is divided into four
functional areas, described below.
High-Level Modem
The high -level modem software consists of 11 BASIC keywords that provide the ability to turn the
modem on and off, transmit strings to and from the modem, and check the status of the modem. Strings
sent to the modem can contain data, low-level modem commands, or both.
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