Sierra Wireless AirLink ES450, Руководство пользователя по оборудованию

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On-site Installation and Setup
Rev. 7 July 2019 30 4116746
Connecting the Enterprise Router
See Connecting the Enterprise Router or other Equipment on page 18.
Power Connector on the ES450 Gateway
If you are using the DC power cable to connect the ES450 gateway to a power source:
• Pin 1—Use the red wire in the DC cable to connect Pin 1 to the power source.
Include a 2.0 A fast-acting fuse in the input power line. Sierra Wireless recommends
using a continuous (unswitched) DC power source. For installations that require the
gateway to be turned on/off, Sierra Wireless recommends using the Ignition Sense
(Pin 3) input for that purpose.
• Pin 2—Use the black wire in the DC cable to connect Pin 2 to ground. See also
Grounding the ES Series Gateway Chassis on page 31.
• Pin 3 (Ignition Sense)—Sierra Wireless recommends alway using the Ignition Sense
wire to turn the gateway off. It should not be turned off by disconnecting power.
For installations where the ES450 gateway is turned on/off, use the white wire in the
DC cable connected to Pin 3 to:
· Turn the gateway on/off with the vehicle ignition
Note: To turn the gateway on/off with the vehicle ignition, Sierra Wireless strongly recommends
using an unswitched VCC on Pin 1 (Red, Power wire on DC cable) with Pin 3 (White, Ignition
sense wire on DC cable) connected to the ignition.
· Turn the gateway on/off with a low voltage disconnect device
Note: To turn the gateway off when the voltage drops below a defined level, connect Pin 3 to
an external low voltage disconnect. See
Figure 3-3 on page 31.
For installations where the ES450 gateway is permanently on (never turned on/off),
connect the white wire to the red wire.
• Pin 4 (General Purpose I/O) (Optional)—Use the green wire in the DC cable to
connect Pin 4 to a switch or relay on an external device you want to monitor. For
more details, see
page 32 .
See Figure 3-3 and Table 3-2 .
2G GSM/GPRS/EDGE 850 353 176 88
2G GSM/GPRS/EDGE 900 333 167 83
2G GSM/GPRS/EDGE 1800 167 83 42
2G GSM/GPRS/EDGE 1900 158 79 39
Table 3-1: Recommended Antenna Separation
Service Frequency
(MHz)
Wavelength (

)
(mm)
Best Antenna
Separation (mm)
(1/2

)
Good Antenna
Separation (mm)
(1/4

)