User Manual

970 User Guide and Technical Information

External Control

Triggering Recording from External Timecode

The 970 can be conﬁgured to start recordings when incoming timecode begins rolling and stop when

it becomes stationary. This is generally referred to as “Record Run” timecode. The master timecode

device should be setup in this manner. To conﬁgure the 970 to follow Record Run commands:

1. Set Setup Menu option [Remote Control - Rec Start/Stop] to Timecode

2. Make sure that the device that is sending timecode is congured to send stationary timecode

while stopped and running timecode while recording.

3. Some cameras do not send the correct timecode in the rst few seconds of a recording, or

they send short bursts of timecode causing the 970 to record short unintentional les. The

[Timecode/Sync - Auto Record Hold Off] feature is designed to eliminate these issues. When

a hold o value is applied, the 970 will begin capturing the moment timecode begins rolling

but will only go into record if a valid timecode signal is present after the hold o time has

elapsed.

The 970 (and many other Sound Devices products, including the rack-mount PIX video recorders)

have Freerun Auto Mute and 24h Run Auto Mute timecode modes. These modes mute timecode

output when the unit in stopped mode (i.e. not recording or playing back). This allows the unit to

trigger other units with timecode as if they are in a Rec Run timecode mode, while maintaining run-

ning timecode value. (See “Timecode Modes”, page 24)

Triggering from external timecode will not cause the 970 to automatically stamp exter-

nal timecode to recorded ﬁles. The timecode stamped to ﬁles is determined by the setting

[Timecode/Sync - Timecode Mode]

GPIO (General Purpose Input / Output)

The 10-pin Phoenix connector provides six GPIO logic points. These can be used as simple-closure

inputs, and to drive LEDs or relays. The following table lists the pin assignments of the GPIO con-

nector.

Pin Function

- (-) Ground. Provides access to ground for triggering logic-low connections.

1 REC Input. Triggers 970 record.

2 Play Input. Triggers 970 play.

3 Stop Input. Triggers 970 stop.

4 (unused)

5 (unused)

6 REC Output. Activates upon 970 record.

7 Play Output. Activates upon 970 play.

8 Stop Output. Activates upon 970 stop.

+5V +5V DC Output. Constant source of +5V for triggering logic high connections.

GPIO inputs (pins 1, 2, and 3) and GPIO outputs (pins 6, 7, and 8) can be set to “logic high” or “logic

low”. Logic high connections will trigger to the presence of +5V (GPIO input) or output +5V when

the function is active (GPIO output). Logic low connections will trigger when connected to ground

(GPIO input) or become connected to ground when the function is active (GPIO output).