MC25

Products

MC25 / MC35
Programmable Keyboards

The modular construction of these compact keyboards allows easy configuration to specific system requirements. A LC-Display, MSR and SmartCard reader can be added in any combination. The ergonomic design provides a user-friendly interface.

The Preh Commander MC 25 W/X provides 25 key positions which can be configured and programmed to meet changing needs.

The Preh Commander MC 35 W/X provides 35 key positions.

All key positions can be populated with your choice of single, double, triple and quad key keytop sizes or ``dead-keys" which disable a position.

The key positions are programmed either directly through a connected standard keyboard or through the unique, menu-driven Preh Programmer software. In both cases, the key-codes are stored in the EEPROM and can be rewritten as often as desired.

The keyboards are compatible with all common operating systems including DOS, Windows, OS/2, Unix, etc. Various system interfaces are supported. On the keyboard side of the interface is a 8 pin mini-DIN which allows interchangeable interface cables.

The standard keyboards are designed for the IBM synchronous PC and PS/2 data format and includes a standard PS/2, 6 pin mini-DIN PC side connector. Optional RS 232 output is available with a special interface cable. (Note: The SmardCard reader is not available when using the RS 232 interface)
Both keyboards come with a daisy-chain port allowing them to be placed between a standard main keyboard and the system unit. The standard daisy-chain port is a 6 pin mini-DIN (PS/2) style connector.

The data from all connected or integrated I/O devices is transmitted over the keyboard interface, eliminating the need for additional decoding devices and their associated cables, allowing reduced cable management.

Available Options:

Magnetic Stripe Reader (MSR)
The standard MSR is a bi-directional, double track reader (tracks 1 and 2). A three track reader as well as tracks 2-3 reader is also available. The MSR reads all magnetic cards in accordance with ISO 7810 and 7811.

SmardCard Reader
A SmartCard or chip card Reader is available for reading and writing can be integrated in either model. Check with Preh for a list of supported standards.

LC-Display (MC-25 only)
The liquid crystal display is integrated in the housing and runs in the yellow-green mode. The backlit display is available in a 2x16 character configuration. The display is driven by software drivers supplied by Preh.

Daisy-Chain Connection
The MC 25 and MC 35 are equipped with 6 pin mini-DIN connections to allow the connection of an additional standard keyboard, or other MC Series Keyboards from Preh.

Specifications

MC 25 - 35 General Specifications



			Preh Commander MC 25 W/X

	Technical Data

		Mechanics:



	Preh Commander MC 35 W/X

Housing	Color: gray-white, similar to RAL 9002 MC 25 & 35 W/X: 195.7x126.4x54.7 mm (length x width x height)
Keys:	Key spacing: 19 mm 25-35 key positions Actuation travel: 3,5 mm ± 0,5 mm Actuation force: 0,6 N + 0,2 N Impact stability: 1 ON, 1 min. Life: minimum 7.5 x 106 cycles per key, typical 10 x 106 cycles per key Colors: grey-white, similar to RAL 9002 grey, similar to RAL 7035 additional colors on request


	Electronics:

Supply voltage:	+ 5 V ± 5%
Current consumption:	60 mA (without options)
Internal keyboard electronics contain 8 KB EEPROM memory Data format/Intedaces:	bi-directional, serially synchronous or serially asynchronous Interface cables to the main system are directly connected from outside (8pole Mini-DIN connector at the keyboard electronics) The standard data transfer to and from the keyboard is in the IBM synchronous format for PC-XT, AT, 386, 486, 586 and PS/2systems Additional interfaces, such as RS 232C, RS 485, RS 422 can be supplied. Daisy chaining additional keyboards (101-keyboards for online programming) over a 6pole MiniDIN connector at the keyboard.
Autorepeat:	all keys, repeat frequency and delay time are programmable
	4 LEDs for e.g. CAPS LOCK, SCROLL LOCK, NUM LOCK as well as magnetic card and chip card state
	Buzzer for generating acoustic signals (keyclick)
Magnetic Stripe Card Reader: (Optional)	Track: 2 Tracks: 1+ 2, 2+3 Tracks: 1+2+3 Magnetic cards in accordance with ISO 7810 and 7811 are read A LED signal is given after each correct read
Chip Card Reader (Optional):	according to MKT-specification v 0.9


	PIN Assignments


	CPU Side Interface 1 - data 2 - NC 3 - GND 4 - +5V 5 - clock 6 - NC Shield


	Keyboard Side Interface 1 - NC 2 - clock 3 +5V 4 data 5 GND 6 NC 7 NC 8 NC Shield

Programming	"Online Programming"	In the online programming mode, the keyboard is programmed with another keyboard (101, etc.) connected to the daisy-chain socket. In this mode each key can be programmed up to eight levels. The desired key assignments are stored directly in the internal EEPROM. When operating the keyboard no additional software (TSR) is required.
	Programming via the "Preh Programmer"	With the Preh Programmer software the programming of the keyboardis done over the keyboard interface (DOS). The programming mode supports uploading and downloading functions and the various key assignments can be made available, edited and copied to a file. The programmer allows programming on up to 128 levels.
ESD-EMV Characteristics	CE Approval Emmissions: Interface Stability:	EN55022, Category B FCC Subpart 15, Class A Resistance against magnetic fields, test limit 3 V/m Resistance against ESD according to EN 50082-1, resistance limit 15kV
Temperature Ratings	Storage and Transportation Operating Relative Humidity	-40deg C to +60deg C +/- 0deg C to + 50deg C 5% to 93%
Air Pressure		700 hPa to 1060 hPa
Climatic Class		DIN-IEC 68, Part 1, Annex A
Materials Surfaces	Housing Guide Frames Switching Membrane Base Plate Spring Elements Ventilation diaphragm Keycaps	ABS Polystrol Polyester Steel, Zink Plated Elastomer Trevira Vestodur

Please call Realstar at 800-554-9111 or e-mail us at

kevinc@real-star.com

for information and the lowest, up-to-date price on any of our products .

For more information, email us at kevinc@real-star.com.