User Manual

ParSec Reader Installation Manual - Issue:2 - January 1998 - Page 12
4.2. Adjusting the Read Range
The range at which Portable Asset and Personnel Tags is read by the reader is adjustable from
a maximum free space range of c. 25m down to a few cm. to suit the requirements of the
individual installation.
Notes
(1) The nominal 100m long range reading of Static Asset Tags is not adjustable
(2) Tamper alarms, routine reports and low battery conditions are signalled by
Static and Portable Tags at high power (i.e. long range); the Personnel Tag
always signals at low power (short range).
The range of portable asset and personnel tags is adjusted by using the Range Adjusting Tag
(PS-RAT1-1)
4.2.1 Range Adjustment Procedure
1. Power on the reader
2. Press the Scan Reset button (S6) - the red power LED will flash
3. Move to the position where you would like tags to be read and press and hold down
the FIND button on the PS-RAT1-1. Within about 10 seconds the reader will then
find the RAT and set the range. This will be signified by the tone sounder on the
reader operating and the left hand red LED flashing. You can now check the range by
pressing and holding down the SEEK button on the RAT. When the reader sees the
RAT it will operate the tone sounder and the red LED.
4. If you would like to make some minor adjustment to the range you can use the + & -
buttons. Press these keys momentarily and check the red LED on the reader flashes
each time. Note that very brief presses of less than 0.3 seconds will be ignored.
5. Use the SEEK button and check the range in different locations in the area where you
want tags to be read. In all except very large open areas or outdoors, you will find
blind spots and hot spots. This is caused by the radio signals from the tag being
reflected off walls, ceilings, furniture and people.
6. Once you are satisfied with the reading range, press and release S6 and this will store
the range adjustment in the reader memory. The power LED will now show a solid
red. The range setting is stored in non-volatile memory, so it will be retained even if
the reader power is removed.
7. If at any time you wish to alter the range, you can repeat the above procedure as
many times as you like.
Notes
(1) Owing to the nature of RF at the frequencies used in the ParSec system, it may
be desirable to carry out the set up procedure a few times to optimise reader
performance to the location.
(2) Mounting Portable asset tags on metal surfaces may result in a severe loss in
range unless care is taken to find the best location. Generally these tags should
be located as near to a corner as possible with the arrow on the tag pointing to
the outside edge. Although laptop computers appear to have a plastic outer