User's Manual

Exalt Installation and Management Guide
EX-i Series GigE (FDD) Digital Microwave Radios
20 202675-008
2016-06-01
linked in the direction towards the local radio, or the local radio is receiving excessive errors in this
direction. It could also indicate a serious failure of either radio.
Local-end LEDs (when this button is not pressed) in combination with remote-end information (from a
technician located at the far end, and/or when the button is pressed) can substantially aid in rapid
troubleshooting analysis.
Rear Panel Diplexer Orientation
The rear panel of the radio chassis arrives in a ‘blank’ condition, requiring the mounting and
connecting of at least one diplexer filter. Figure 11 shows the rear panel without diplexers.
Figure 11 Rear panel without diplexers
One rear panel label indicates which diplexer type(s) are compatible with the chassis. Only mount and
connect diplexers with matching type numbers.
For typical radio configurations, one diplexer is mounted and connected on the rear panel. The
diplexer selection and orientation is based on the precise center frequency and transmitter-to-receiver
frequency spacing that is required for the link. This is typically determined during the licensing stage
and subsequently during the purchasing process of the radio so that the diplexers match the frequencies
and spacing required.
Each diplexer can cover a range of center frequencies for transmit (Tx) and receive (Rx), and the ports
on the diplexers are labeled to indicate that range, as shown in Figure 12. The diplexer can be oriented
in one of two ways, and the right-side-up horizontal text on the diplexer indicates the configuration, as
oriented. The designations on the diplexer are labeled TX-H (Transmitter High) or TX-L (Transmitter
Low) to indicate if the transmitter frequency range is higher or lower than the receive frequency range.
Likewise, the receive frequency ranges are labeled as RX-H and RX-L.
Figure 12 Diplexer labeling
TYPE MUST MATCH
TX AND RX FREQUENCY RANGES DISPLAY HERE