User's Manual

(Optional) Configuring Multi-Host Systems for Manual Mode

FlexWave Prism Host, Remote and EMS 5.1 System Reference Page 175

•• Remotes are set to Cellular A"/A Band which has 8 usec of system delay.

The delay ranges will therefore be:

– Remote 1 delay (48-136)

– Remote 2 delay (88-176)

The system calculates these delay values—this is a typical example based

on the fiber lengths provided. You select a delay value that’s within the

range calculated by the system.

Set the delays to the same values for all nodes in the network in order to:

•• Optimize simulcast

•• Make BTS datafill changes simple (same delay offsets for all nodes)

•• Simplify E-911 integration (same delay offsets for all nodes)

Delays cannot be shortened; they can only be lengthened. The

recommended approach is to normalize all Remotes to the longer

minimum delay. In this example the delay would therefore have to be 88

usec.

ii In the

DART Reverse Delay

box, set in microseconds the actual delay that will be

applied to the RF reverse path signal. The actual delay of the RF path will be

within 1 usec. For E-911 TDOA applications, the reverse path delay must be

measured to achieve the +/- 50 nsec delay accuracy specified for DAS

networks. The FWD and REV delay values are usually the same because the

fiber path between the two is typically the same.

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