Table of Contents
Advertisement
3. 9950/9951 KEYPAD INSTALLATION
Note: Please refer to the Keypad Installation Instructions for further details.
The front of the keypad can be removed from the back plate by releasing the
two screws at the bottom of the case.
9950 Mounting Locations
Excessive interference with external devices may lead to poor read
performance. Follow these simple guidelines to prevent interference:
Avoid mounting the keypad near magnetic devices, such as motors, door
releases, entry phones, loudspeakers and PA systems.
Avoid microwave devices such as ovens or detectors.
Avoid mounting the keypad near large metal structures. Do not screw the
keypad to a metal frame.
Do not mount readers back to back, even if there is a wall between them.
Warn users that holding a mobile phone in the same hand as a tag may
seriously affect the reading performance.
If you are in doubt, test the keypad before finally fixing it in position.
Network Wiring
Keypad address = 2
To next keypad
(max. number
may depend on
network; see
the
Engineering
Manual
)
Keypad address = 1
12V
0V
Max. 100 metres to furthest keypad
7/0.2 unscreened alarm cable is normally
used. Screened cable may be needed in
areas with high levels of radio frequencies;
refer to control panel
Figure 21. 9950/9951 Network Wiring
11680293 Issue 1
Control Panel or
Installation Instructions
MSNode
Keypads can
connect in
a daisy-chain or
star configuration.
Supply voltage
must not drop
below 10.5V at
each keypad
(12V min.
recommended).
The spare core
can be used to
double up "B"
(0v) to reduce
voltage drop.
.
Page 24
Advertisement
Table of Contents
