DN1870-0905
8
Installation Considerations
The
P345-SPACER
isolation spacer may be used to improve the read range
distance when mounting the reader to a metal surface. To optimize reader
range, use the number of backplates as indicated in
Table 2
. Use of Isolation
Spacers is optional and not required for non-metal mounting surfaces.
Table 2: Isolation Spacer Recommendation for Mounting on Metal
Installation of two P345MTR readers side-by-side and back-to-
back
Read range is not affected if the center-to-center distance between two readers
is greater than or equal to four (4) inches (101.6 mm). Two readers can
simultaneously read the same badge or tag if the distance between the two
readers is less than 4 inches, center-to-center. If the distance between the two
readers is less than four inches, field interference between the two readers may
result in a double-badge read.
Note:
If two readers are being placed back-to-back on a wall less than 4 inches
thick, maximum performance can be achieved by using a metal separation
plate and then using isolation spacers as necessary.
Distance
Reading Distance
No metal plate
100%
4.5 cm
100%
2.7 cm (3 tamper plates)
85%
1.8 cm (2 tamper plates)
70%
0.9 cm (1 tamper plate)
50%
0 cm
10%