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TransTerm 9B 'BASIC' Programmable Terminal

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Basic Interpreter
Serial Port
Developer's Kit

The TransTerm 9B 'BASIC' Terminal is a computer programmable in an abbreviated version of the BASIC language (TTBASIC). Using it's flexible programming resources, the terminal can be adapted to a wide variety of stand-alone applications, such as data collection, activity tracking, event timing, and equipment control (optional equipment may be required). The standard unit comes with a 2-line display, 75-key keypad, serial port, time-of-day clock and 32K bytes (128K optional) of battery backed up program/data memory.

Basic Interpreter

The basic interpreter operates in 3 modes:

1. DIRECT mode - Executes a TTBASIC statement immediately.
2. RUN mode - Executes a TTBASIC program downloaded to the TransTerm.
3. TERMINAL mode - Emulates a dumb terminal.

The interpreter recognizes a full set of functions and statements that provide memory initialization, program control, and input/output of data. Each program statement has a preceding integer line number. The statements are stored is ascending order in the program memory.


  • Twisted nematic liquid crystal technology with 2 lines of 40 character positions each.
  • 96 ASCII characters (upper, lowercase, numerics and specials) with a blinking box cursor symbol.
  • 5x7 dot matrix 0.179" high x 0.124" wide (4.55mm x 3.15mm).
  • TTBASIC PRINT and LOCATE commands are used to print characters on the display and for cursor positioning.

Membrane Keyboard

  • 72 hermetically sealed membrane key switches with Key­click for audible feedback.
  • Keyswitch travel: 0.006" ­ 0.008", Typical with actuating force: 4­8 ounces.
  • Rated life: 10,000,000 cycles per switch element.

Most of the keys generate a single ASCII character defined by the keypad legend. Any of these keys can be used by a RUNning program to perform a special task. Other keys perform the following functions:

ON - Turns ON a battery powered unit.

OFF - Turns OFF a battery power unit.

STOP - Stops a RUNning program (RUN mode) and returns control to the keyboard (DIRECT mode).

RUN - Executes a program in memory (RUN mode), if there is a program loaded.

SPACE - Generates the ASCII space code (CHR(32)).

DELETE - Deletes the last character entered.

ENTER - Generates the ASCII carriage return (CHR(13)) and terminates a statement line or string input.


  • 32K bytes (128K optional) used for both programs and data storage.
  • The BIOS occupies the first 3K bytes of memory.
  • User's BASIC program is stored next. The maximum program size is 64K (multiple programs can be CHAINED to on the RAM disk).
  • Data arrays are stored next, followed by the RAM disk which can hold program files as well as data files, etc.
  • The maximum number of files is 254, the maximum file length is 64K, and the maximum number of records per file is 64K.
  • The entire memory is maintained by a lithium battery when the unit is turned off (3 to 5 year battery life).

Serial Port

  • Standard: EIA RS­232C compatible, Optional: EIA RS-422, with Serial asynchronous full duplex ASCII coding.
  • Data format: 1 start bit, 7 or 8 data bits, Optional parity (even, odd, mark, space or none), 1 stop bit.
  • Baud rates: 110, 150, 300, 1200, 2400, 4800, 9600, 19.2K

The serial port is used to upload/download programs and data files and for data input/output under TTBASIC program control. Data is transferred as serial ASCII characters. The TransTerm 9B has a 100­byte serial input buffer and recognizes the XON/XOFF protocol.

The RS-232 connection (DB-25F) connector. The RS-422 connection (DB25F or RJ-45) Pin Signal Description DB25F* RJ-45 Signal Description

1 GND Ground 20 1 VDC+ +12 VDC Supply Input (Opt)

2 TD Transmit data Output 7 2 GND Ground

3 RD Receive data Input 23 3 DTD+ Transmit Data (+) Output

4 RTS Request to send Output 22 4 DTD- Transmit Data (-) Output

5 CTS Clear To Send 25 5 DRD+ Receive Data (+) Input

7 GND Ground 24 6 DRD- Receive Data (-) Input

20 VIN Power supply in (12 VDC) 1 7 GND Ground

21 8 VDC+ +12 VDC Supply Input (Opt)

* Pin #16 must be strapped to pin #3 for RS-422 communication via the DB25.


  • 128K MEMORY option provides more space for programs and data.
  • The BARCODE READER interface uses a Hewlett Packard wand interface (5 pin DIN) to connect wand/pen type readers, handheld laser and CCD scanners, and barcode card readers. Nine different barcode symbologies are supported including Code 39, UPC, EAN, Code 128, Codabar, Interleave 2 of 5 etc.
  • A MAGNETIC STRIPE CARD READER (MSCR) interface is available to attach a MT-211 read-only head. The interface converts Track 2 data into ASCII under TTBASIC program control (Track 1 reader also available).
  • The optional AUXILIARY SERIAL PORT adds a bi-directional EIA RS-232C (DB9F) serial port that can be used for I/O to an external device such a printer, modem, scale etc, under TTBASIC program control.
  • The TOUCH MEMORY READER option reads Touch-key ID tags which provide a more durable identification alternative to bar coded badges.
  • The RELAY OUTPUT option (either 2 or 4) can be added for program control outputs to open a door, ring a bell, turn on a machine etc.
  • The DISPLAY BACKLIGHT option illuminates the display for viewing in the dark.
  • The BATTERY POWER option installs Ni-Cad cells to power the unit for portable operation. The power adapter is used as a battery charger.

This option could also be used to provide backup power during a power outage.

  • Various mounting BRACKETS and bases are available for mounting the TransTerm.
  • A LOUDER beeper or L.E.D can be installed for operator feedback (vs. the standard beeper) in noisy environments.
  • A 220VAC power adapter is available in place of the standard 110VAC adapter.
  • CUSTOM OVERLAYS can be provided for high volume re-sellers with special needs, or the keypad can be customized using the standard

Windowed overlay along with a custom legend sheet.

A TTBASIC DEVELOPERS KIT is available for the IBM PC/AT or compatible computers. Programs can be written, debugged, uploaded and downloaded from the PC. The kit includes a cable and a diskette containing a utility program, documentation, and sample TTBASIC programs and routines.



  • Terminal consumption: 150 ma typical (various options will add to the power consumption).
  • Power comes from a power adapter for a 110­120VAC (220­240VAC adapter optional).
  • The unit can also be powered over the serial connector (12 VDC on pin #20 of the DB25F).
  • Memory Battery backup: 3­volt lithium (5 years life), Recommended: 3­volt Panasonic BR2325


  • Operating: 0ºC to 60ºC (32ºF to 140ºF); Humidity: 5 to 95% noncondensing
  • Storage Temperature: -30ºC to 70ºC (-20ºF to 158ºF); Humidity: 0 to 100%

Size & Weight (options will effect weight)

  • Length: 11.7" (29.7 cm), Width: 8.8" (22.3 cm), Height: 1.75" (4.4 cm), Weight: 2.66 lbs. (1203 grams).
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