Sound Devices 970 - Manual (Page 34)

970 User Guide
v. 2.10 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
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Powering
The 970 features an advanced powering system with 2 redundant DC Inputs (on rear XLR4M con-
nections) and PowerSafe technology. Two power sources can be attached simultaneously. When mul-
tiple power sources are connected, the 970 uses only one source at a time. The order of precedence
for power sources is:
1. DC Input 1 (Primary power source)
2. DC Input 2 (Secondary power source)
3. PowerSafe circuitry (Shutdown)
By default, the 970 operates from the Primary power source. When the Primary power source is
removed (or its voltage drops below 9V), the 970 switches to the Secondary power source without
interruption, if available. When operating from the Secondary power source, if the Primary power
source voltage rises above 10.5V, the 970 switches to the Primary power source without interruption.
PowerSafe
When power is removed or voltage drops below the threshold and no Secondary power source is
available, PowerSafe circuitry activates. The 970 displays a warning, stops any active recordings, fin-
ishes writing files, and shuts the 970 down. The PowerSafe Battery powers the 970 during this time.
This feature ensures that files are protected even in the event of an unexpected power loss.