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Manual switching, Using power-consuming peripherals – Hall Research 97-S User Manual

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Model 97

13

Using Long Cables

If a station is over 50 feet away from the PC, DIP switches #2-4 (See
figure 1, item A) should be set to the down position (ENABLE). This
will compensate for the loss in the video signal and improve the
picture.

3

The LONG CABLE DIP switches should be enabled even if an RXP-VKM
receiver is used to extend Station B.

Manual Switching

Model 97 can be made to activate one station and lock out the other.
This requires an optional external control switch assembly which plugs
into the EXTERNAL CONTROL jack on Model 97 . This assembly
can be special ordered from Hall Research Technologies, or can be
made from a mini stereo (8 in, 3.5 mm) plug and a SPDT center off
switch as shown below:

FIGURE 5

External Switch Assembly Schematic

Using Power-Consuming Peripherals

Model 97 draws its power from the PC keyboard/mouse (PS2)
connectors. If a station uses power-hungry peripherals such as
keyboards with barcode reader wands, the PC may not be able to
provide enough current to both the peripheral and Model 97. In this
case the keyboard may lock up. This is not an issue on Station B if it is
extended using the optional RXP-VKM. The peripherals on this
station draw their power from RXP-VKM.

If you must use such peripherals and can’t put them on an extended
Station B, you can special order the powered version of Model 97 by
calling Hall Research Technologies 714-641-6607. Replace Model 97-
P with 97-P-PS and Model 97-S with 97-S-PS.

GND

Stereo Mini Plug

Auto (OFF)

Tip

Station B

Tip

Ring

Ring

Gnd

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