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20
Model 94x/97x Proximity Reader
Installation Manual
Configuring the reader
Switch settings
Two banks of four DIP switches located on the back of the reader
are used to select the reader power level, operating mode, and
beeper sound level. Please note that the location and orientation
of switch block SW2 have changed for readers manufactured
after December, 2002 as illustrated in
Reader, J1 Connector and DIP Switch Locations (PCB Assembly
P/N 100079002 manufactured 12/02 or later)," on page 22.
CAUTION:
Selecting reader power level
The reader's power requirement is selected using four DIP
switches. The optimum power level will vary with each
installation. Higher power levels give improved read range for
badges, while lower power levels allow greater cabling distance
between the reader and the microcontroller. A detailed
explanation is provided below. The figures on the next page show
the location of the DIP switches. The tables that follow the
figures give the switch settings along with the read ranges and
cable distances.
Explanation of Read Range/Cable Distance/Power Level:
Maximum badge read range is determined by the distance at
which the field transmitted by the reader is just strong enough to
wake up the badge. Therefore, the higher the reader's
transmission power, the greater the badge read range will be. The
trade-off for increased read range is a decrease in the maximum
cabling distance between the reader and the microcontroller. The
Power should be removed from the reader while switch
settings are changed.
Figure 10, "Model 94x/97x
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