M100 CDMA
plus
www.maestro-wireless.com
10
Chapter 4
Hardware installation
Mounting the modem:
If delivered with the DIN clip accessory, detailed on page 22, use two M3 screws to mount the DIN clip on the back of the
modem as shown on figure 1.
Figure 1: DIN clip mounted on M100 CDMA
plus
Connecting the external antennas (SMA type):
Connect both antennas with SMA male connector on the modem, make sure antennas are tightly secured. Select a
CDMA antenna with the right CDMA frequency and an impedance of 50
Ω
; incorrect antenna will affect communication
and even damage the modem. Select a GPS antenna with an impedance of 50
Ω
; incorrect antenna will affect GPS
sensitivity and time to fix.
Note
: Make sure to install CDMA and GPS antennas with an angle of at least 90° to avoid disturbance. Refer to the
drawing on Figure 2 below.
Figure 2: Antenna positions
Note
: Respect a safety distance of at least 26.6cm to the antenna during the modem operation.
