User`s guide

JUMPER SET UP

The HoloPlexer contains three internal jumpers, which will require set up if any of the following

features are to be used.

1. Host DTR Control (J7)

2. Use of MX006 (or other) Interface Accessory (J8)

3. RS-422 Host communications (J9) – May apply, see below.

If none of the above applies, the HoloPlexer is ready to use as received and will act as a 4 or 8 port,

RS-232 multiplexer. (The default locations of all jumpers are pins 1 and 2.)

If jumper set up is required, the top cover of the unit must be removed. This is accomplished using a

small, Phillips head screwdriver to remove the two screws on each side of the top cover. The top

cover is then slid back slightly to clear the rear connectors and lifted off exposing the printed circuit

board and its jumpers. DO NOT REMOVE THE FEET ON THE BOTTOM OF THE UNIT DURING

DISASSEMBLY.

1. Host DTR Control (J7):

Jumper J7 controls this option and is located on the left side of the circuit board behind the yellow

indicator. Move the jumper block from pins 1 and 2 to pins 2 and 3 to enable this option. The unit

must be configured for “host DTR enable” using the HoloSet

program as detailed later in this

manual.

IMPORTANT NOTE: When the host DTR option is enabled, port #8 of the MI8008 is unavailable

for use as a scanner/slave mux-box input.