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R-55 / Mar 2003
SUPERPHONE INPUT
Internal Programming Options
Internal programming is accomplished via printed circuit board (PCB)
mounted dipswitch SW1, located on the top of the module (beneath the
DB-25 connector). Note when a dipswitch position is thrown to the right
it is ON.
Mutes
When the SPN-55 phone channel ON switch is pressed, it can activate
console mute functions. Dipswitch SW1 determines which of the console’s
two mute lines will be activated:
SW1 pos 5 mutes the control room when the phone module is ON*
SW1 pos 4 mutes studio when the phone module is ON
Timer Restart
When the module is turned ON, the console’s digital timer can be
programmed to automatically reset to zero and begin counting up.
SW1 pos 6 activates timer restart when the phone module’s ON/
START switch is pressed
Gain Trimpot
There is a PCB-mounted trimpot that sets Caller In port input gain.
Hook-Ups
As stated before, all user wiring to and from SPN-55 modules takes
place at a multi-pin DB-25 connector mounted on the top of the module.
Audio Connections
These include caller inputs and outputs. All are +4dBu balanced analog
mono.
Pin 25 – Call In SH
Pin 24 – Call In HI
Pin 12 – Call In LO
Pin 22 – Call Out SH
Pin 21 – Call Out HI
Pin 9 – Call Out LO
Control Connections
These include remote on and off, and on tally functions.
Pin 3 – Start
Pin 4 - Stop
Pin 5 - Start/Stop Common
*factory default settings
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