MC 16V Electronic Extender Datasheet
AZ-COM Website (archived)
EE Software Control (Status Register and Control Registers)
Universal MC Extender 16V
Universal MC Extender 16V (UME16V) is a device designed to enhance the
process of testing and developing Micro Channel Bus products. With the UME16V,
you can disconnect the power and bus signals from the top connector and safely
insert or remove tested cards with the PC power turned on. This not only saves
time, but also protects the components of the PC from damage that results from
constant Power On - Power Off cycling.
Overcurrent Sensing Circuitry that detects excessive current
consumption and protects PC power lines by automatically disconnecting the
tested card if overcurrent is detected. You can change the sensing threshold
by simply changing the current sensing resistors.
Simple to use optional software interface capabilities with 7 I/O
addresses available. Free POS register initialization program is included. The
demo program can be downloaded from our FTP Page (see menu bar below).
Four LED's, one indicates whether the power to the top connector is
on or off, the other three indicate an overcurrent condition and help detect
faulty cards. An overcurrent condition can also be tested by reading the status
Bus switches installed in sockets for easy replacement if damaged by
faulty tested cards.
Breadboard area with all crucial signals available on the board.
Ability to connect external power to the top connector to test cards
under various power supply voltages.
Maximum Current: +5V is 4A. All others are 2A.
LED Indicators: Power On (1) and Overcurrent (3).
Overcurrent Settings: Factory settings - 2A on +5V, 0.25A on +12V,
and 0.25A on -12V.
Bus Switches: 25 Ohm maximum, 35pF maximum at 0V/25 C.
Signal's Direction: All signals except for the RESET signal are
connected to the PC Bus via a bi-directional analog switch. The RESET signal
is uni-directional from the PC Bus into the top connector.
Universal MC Extender 16V "UME16V" aka "MC16EE", P/N 9900-02-10