E.F. Johnson Viking VX Series, Руководство пользователя

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CIRCUIT DESCRIPTION
6-15
September 1994
Part No. 001-2008-300
Pin 13 RX INJ
This pin is the power sense for the Receiver
injection. It is a linear voltage source that is a func-
tion of the injection power. The voltage level will be
between 0V - 5V and be able to drive a 10k ohm load.
Pin 14 SYN LK RX
The main synthesizer lock detector output for the
Receiver. The synthesizer is locked with a TTL logic
high state.
Pin 15 GROUND
A pin that carries ground current between the
RFIB and the Receiver board.
Pin 16 HS CS RX
Not used at this time.
Pin 17 GROUND
A pin that carries ground current between the
RFIB and the Receiver board.
Pin 18 RF CLK
The clock controls the Receiver synthesizers
when loading. The input source in the Controller is
TTL with the speed determined by the synthesizer
chip. There could be as many as four synthesizers and
a shift register.
Pin 19 HS LK RX
Not used at this time.
Pin 20 RF DATA
A data pin from the Controller which has the dual
role of loading the synthesizer chips and adjusting the
power control D/A lines for proper output power. The
data has TTL levels. Up to four synthesizer chips and
a shift register could be connected to this pin.