ADRF PSR-78-9537-XB, Руководство пользователя

Страница: 40 / 56

Advanced RF Technologies, Inc. 40

Channel Center Frequency: The user can input the center frequency of the pass-band.

Bandwidth: Allows the user to select the desired bandwidth for the passband. Choices for wideband
frequencies include 3, 5, or 10 MHz. Narrowband choices include 6.25, 12.5, 25.0, 75.0 and 200 kHz.
The required frequency spacing between channels is 4x the bandwidth from center to center. For
example, if there are 2 channels each at 12.5KHz, then the required frequency spacing between these
2 channels will be 50KHz (measuring from center to center). If channel bandwidths are different
between the 2 channels, then the required frequency spacing will be 4x the larger bandwidth.

Downlink Gain: Minor gain adjustments can be performed on a per channel basis to equalize signal
levels

Downlink Freq - Start: Displays the start frequency of the pass-band once the band selection has been
set

Downlink Freq - End: Displays the end frequency of the pass-band once the band selection has been
set
5.4.3 SNMP
Figure 5-18 Install Tab – SNMP
The SNMP section allows you to specify the Site ID and Description. The Site-ID is the code that is used to
identify the repeater.
5.4.4 Location
This section allows the user to input the latitude and the longitude of the repeater.
Figure 5-19 Install Tab – Location
5.4.5 Modem Box Setting
This section allows the user to specify alternative Repeater IP, Subnet Mask, and Gateway settings. These
settings are enabled when the Host/Remote switch is set to the Remote position.
Figure 5-20 Install Tab – Modem Box Setting