User guide

Setting up the SFN Functionality

Table H.1 SFN Related Static Parameters

Name Setting Comments

Reference Clock Source GPS

NTSC Reference Clock Type

PAL

Gives an HSYNC type input to the

Encoder. Locked to 1PPS.

Reference Clock Output

Enabled

If the primary inputs (GPS A) fail and

there is a signal on the secondary

input, the unit will switch to GPS B.

Reference Clock Redundant

Switch

Disabled No switching available.

Enabled

After a failure if the signal reasserts

itself on the primary inputs, the unit

will switch back

Reference Clock Redundant

Revert

Disabled No switching available.

GPS Terminate Input A Enable/Disable

GPS Terminate Input B Enable/Disable

Enabled: Termination is 50 Ω.

Disabled: High impedance

Caution!

Although the synchronization signal is 1 pulse per second, correct termination and

cable impedance are necessary to ensure a clean pulse edge for consistent

reference timing.

Termination: If units are daisy-chained, all inputs must be high impedance [Disabled] except the last one in the chain which must be set to

Enabled [Terminated].

2/1553-FGC 101 1014 Uen B

H-9