Neptune 13458-000, Руководство по установке и обслуживанию

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4. Remove the Ethernet surge protector form the inside of the
Gateway cover.
5. Install the cellular modem so that the SIM card slot faces left,
when the Gateway cover is open, by attaching it to the inside
of the Gateway cover using the four screws that are #4-40 in.
x 3/16 in. long.
6. Connect the coax cable from the stubby cellular modem
antenna to the cellular modem's ANT port.
7. Connect the Ethernet cable from the J1003 BF Ethernet port
on the Gateway to the LAN 1 Ethernet port on the cellular
modem.
8. Connect the power cable (Neptune Part No. 13220-000) from
the J5 port on the Gateway to the PWR port on the cellular
modem.
9. Configure the cellular modem as described in "Configuring the
Cellular Modem" on page 108.
10. Close the Gateway cover.
11. Tighten the four screws in the Gateway cover to secure it.
External Cellular Antenna Option
Some installation sites can have a very weak signal (-90 dBm or
weaker). An optional external cellular antenna kit (Neptune Part
No. 13147-000) can increase the signal strength in these cases.
Refer to "Gateway Kits" on page 5.
Installing the External Cellular Antenna
To install the external cellular antenna, complete the following
steps.
1. Open the Gateway cover.
2. Disconnect the internal coax cable from the stubby cellular
antenna.
3. Loosen and remove the lock-down nut and lock washer on the
stubby cellular antenna, and then remove the antenna.
4. Install the coax surge arrestor in the same hole.
112 R900 Gateway Installation and Maintenance Guide
Appendix D Cellular and Ethernet Considerations