THE ‘SPLIT’ MODE (FM VERSION ONLY)
ENG
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The SYNC OUT (BNC connector) outputs a 19KHz / 5Vpp square wave for external equipment
synchronization (i.e. RDS encoders). The Sync output must be enabled via the menu (Optional Controls /
MPX Mode / Sync Out).
17 THE ‘SPLIT’ MODE (FM VERSION ONLY)
The MPX SPLIT mode (available as an option on FM version fitted with MPX option– see Chapter 2) allows
the MPX OUT 2 output to toggle between an external MPX signal applied to AUX 1 input (or AUX 2 – see J1
and J3 jumpers) and the MPX signal internally generated. Switching is triggered by SPLIT Input on Digital
Data Port (see paragraph 17.1).
The SPLIT function allows to easily manage that systems, where a flexible and inexpensive switching is
required between two MPX signals, f.i. the one associated to the Network (i.e. common to all transmitters)
and the one associated to a regional/local program or to advertising spots differentiated for selected
broadcasting areas.
The following picture shows the THEORICAL (logic) scheme of MPX split circuit.
A
U
X
2
A
U
X
1
I
N
P
U
T
O
U
T
P
U
T
I
N
P
U
T
Output Level
SW1
Sw2
Split Control
MPX
Generator
SPLIT
mode
SPLIT
control
MPX OUT 2 OUTPUT
LOGIC SWITCHERS
SW 1
SW 2
active Internal
MPX
open
closed
enabled
unactive
Fold-back of Aux 1 signal *
closed
open
disabled
Internal MPX (all time long)
* Aux 1 level is controlled via trimmer
** Depending on Jumper configuration on MPX board, external MPX could be also injected from AUX2 input.
Summary of Contents for Falcon 35
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