page 6 – 3
D500 / Jul 98
S T U D I O C O N T R O L M O D U L E
Internal Programming Options
There is one user-programmable dipswitch on the SCD-500. It is a 7-
position dipswitch, SW1, located on the module’s main PCB slightly above
and to the left of the talkback master level control.
For the purposes of this manual, we will assume you are holding the removed
module upright, component side towards you, with gold-plated card fingers to the
left and the module faceplate to the right. This will enable you to read the control
legends silkscreened next to the programming switch. Note when a dipswitch
position is thrown to the right (towards the module’s faceplate) it is ON.
External Talkback Mute/Dim
There is an independent talkback output from the SCD-500 module (see
upper DB-25 connector page 6-6). By programming the first two positions
of dipswitch SW1, you can make this external talkback output MUTE
whenever a studio is muted. You also have the option of making the output
DIM (drop -20dB in level) instead of MUTE.
Dipswitch position 1 mutes external TB whenever Studio 1 is muted*
Dipswitch position 2 mutes external TB whenever Studio 2 is muted*
Dipswitch position 7 makes external TB DIM instead of MUTE
Studio Dim
Input modules controlling studio microphones can be programmed to
MUTE a studio whenever the module is turned on (i.e., it’s microphone is
live). If you wish, you can have a studio DIM (drop -20dB in level) instead
of MUTE:
Dipswitch position 5 causes Studio 1 to DIM instead of MUTE
Dipswitch position 6 causes Studio 2 to DIM instead of MUTE
Note the DIM functions do not affect talkback interrupts, which always
completely replace the studio’s regular monitor feed with the console operator’s
TB signal. Note also if a studio is muted, talkback cannot be heard. However, if a
studio is programmed to DIM instead of MUTE, talkback audio could presumably
make it from the studio monitor speakers to the open studio mic.
*factory default settings
A-5000 / Nov 98