DNF Controls SR6-SONY - Manual (Page 4)

4 SR6-SONY, Serial to Parallel Converter
4. OPERATION
Upon receipt of the RECORD, PLAY or STOP command, the SR6 outputs a momentary GPI LOW, 250
milliseconds in duration, on the appropriate output. The RECORD command pulses both the RECORD +
PLAY GPIs.
Receipt of the REWIND or FFWD command causes the SR6 to output a latched GPI LOW on the
REWIND/FFWD output, and a pulsed output on the Shuttle Command output (VPR-2 mode) OR output a
momentary GPI LOW, 250 milliseconds in duration, on the REWIND/FFWD output. This is user
configured using the Rear Panel DIP Switches. For latched operation, the next received command clears
all previously latched outputs.
5. FUNCTIONS
GPI OUTPUTS FUNCTION
1 RECORD
2 PLAY
3 STOP
4 REWIND
5 FFWD
6 Shuttle Command (Ampex VPR2 Mode only)
The front panel LEDs turn on to indicate GPI ACTIVATION.
Status Tally Inputs
The SR6 STATUS INPUTs require an active low (pull to Status Common) on the desired input for proper
status detection. The active low can be provided by an open-collector output, switch closure, relay contact
closure or TTL signal.
Each STATUS INPUT has an internal pullup to +5VDC.
It is recommended that an opto-isolator be used with each Status line from the VPR-2. The emitter of the
output transistor, on the opto-isolator output, should be tied to Status Common. The collector of the output
transistor should be tied to the desired STATUS INPUT.
Set Rear Panel DIP Switch #5 to ON.