SYSCON OUTPUTS
The syscon has access to all the mechanical movers on the deck, and switches command lines to various electronic sections. Not all of the below-listed outputs will necessarily be provided, depending on the vintage, price and degree of sophistication of the machine.
1. Motor controls: start, stop and three speed conditions for the drum motor; for the capstan motor, stop, run and where applicable run forwards and backwards at various speeds – half speed for LP operation; run, stop, reverse for the loading motor; run, stop, reverse for any cassette loading motor; run, stop, reverse and speed control for reel motor(s) where fitted
2. Solenoid controls: since all mechanical operations of the deck must be carried out electromechanically, solenoids may be provided for the following purposes: pressure-roller applica- tion; fast-forward/rewind lever; play lever; loading-drive engage- ment where no dedicated loading motor is employed; and reel brake application
3. Indication lamps: front-panel or viewfinder indications of machine function and status, they can range from simple LED point-emitters to dot-matrix pattern displays in fluorescent or LED display panel matrices, or electronically generated symbols or characters on the viewfinder or TV screen
4. Signal switching: output lines are provided to switch on and off sections of the machine as appropriate to the mode in use. These may typically be REC + 9 V, PLAY + 9 V. AUDIO DUB + 9 V, REC/PLAY + 9 V, MUTE HIGH, CH LOCK. The latter
inhibits channel change during record so that servo instability is prevented; CH LOCK signal disappears during rec. pause mode.