Sound-devices 722 User Manual Page 54
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722 User Guide and Technical Information
52
v. 2.67 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
DC input uses a 4-pin Hirose connector (Part # HR10-7P4P). There are two connection options avail-
able.
External DC Input Wiring
Operation
pin-2 to negative (–)
pin-3 to positive (+)
operates the on-board Li-ion charger when the unit is both turned on and off. Use when plugged
into AC power
pin-1 to negative (–)
pin-4 to positive (+)
operates the on-board Li-ion charger only when the unit is turned on—there is no external current
draw when powered off. Use when connecting to an external battery pack
Regardless of whether pins-1 and -4 or pins-2 and -3 are used, the unit will always charge the Li-ion battery when the unit is powered on.
Pin-1 and pin-2 of the external DC input are at the same ground potential as chassis and signal ground.
The voltage level of the source powering the unit is displayed on the main LCD screen in the up-
per left-hand corner ( ). When the 722 senses a low voltage condition from an external
DC source the power LED and battery voltage display flashes, to alert the user. When the external
DC reaches 9 volts, the 722 will automatically switch over to the removable battery. If no battery is
installed the unit will shut down.
The included AC-to-DC power supply operates the unit and charges the removable batteries simul-
taneously. Pins-3 and -4 are wired to (+) and pins-1 and -2 are wired to (–).
When power is applied, the charging circuit evaluates the battery condition and supplies charg-
ing current, if necessary. When charging, the amber charge LED will flash. Once the battery is fully
charged, the charger will turn off and the amber charge LED will light solid, indicating a full charge.
Large capacity cells increase the charge time.
Charge LED Activity Description of Activity
Off Charger disabled
On Completed charge / battery fully charged
Blinking Charger enabled / battery is charging
If the charge LED shows anything but a successful charge, the Li-ion battery may require replacement.
Time of Day Battery
The 722 has an internal NiMH LR6 (AA) battery to power to the time-of-day clock and date. This
battery is charged simultaneously with the Li-ion battery. The AA battery holds the time of day and
date for approximately 60 days.
Auto Functions with External Powering
The 722 can perform several functions when DC power is applied to and removed from the recorder.
Options available include:
• Power on unit – unit will turn on and be ready for operation.
• Power on and begin recording – unit will power on and begin recording with the settings
used when previously powered down.
• Power on, power off unit – external DC functions as the on/off switch.
• Power on and begin recording, power off – unit will power and begin recording, then turn off
when power is removed.
These functions are useful when the unit is part of a production kit powered by a single power
source. A single power switch can be used to power on the whole kit.
- firmware rev. 2.67 1
- Table of Contents 3
- Welcome 4
- 722 Firmware Known Issues 4
- Copyright Notice and Release 4
- Quick Start Guide 5
- Routing Inputs to Tracks 6
- Recording Parameter Setup 6
- FireWire File Transfer 7
- Front Panel Descriptions 8
- Panel Lock 10
- LCD Display Descriptions 11
- -), pin-4 14
- -) and pin-3 (+) are 14
- Back Panel Descriptions 15
- Input Setup and Control 16
- -6 dBFS 17
- Input Delay 18
- Digital Input – AES3 18
- Input-to-Track Routing 19
- Selective Input Muting 20
- Sampling Rate and Bit Depth 21
- Word Clock 22
- C. Link – Multi-Unit Linking 23
- Outputs – Analog and Digital 24
- Headphone Output 25
- MS Stereo Monitoring 26
- Rotary Switch Behavior 26
- Metering and Display 27
- Meter Ballistics 28
- Peak LEDs 29
- Tone Oscillator 29
- 24-Hour Time Counter 30
- Recording 31
- Pre-Record Buffer 32
- Failure During Recording 32
- Front Panel Lockout 32
- Record Pause 32
- Playback 33
- Audio File Formats 34
- Recording Time Calculation 36
- File Naming / Numbering 37
- Scene Name/Number 38
- Take Numbers 38
- Wave Agent Beta 39
- File Management 40
- File Viewer Navigation 41
- File Viewer Screen 41
- File Time and Date 42
- File Size Maximum 42
- Setting/Clearing Flag Bits 43
- Automatic Flag Clearing 43
- File Deletion 44
- False Take Control 44
- Take Number Incrementing 45
- Take List 45
- Take Status 45
- Formatting 47
- Drive Type 47
- Drive Replacement 48
- Drive Failure 48
- When to Use CF 49
- Testing 49
- Qualified CF Cards 50
- FireWire Bus Powering 51
- Qualified Drives 51
- DVD-RAM Drives 51
- File Transfer – FireWire 52
- Powering 53
- Time of Day Battery 54
- Power-up Messages 55
- Power Consumption Variables 55
- Firmware Upgrades 56
- Connecting the CL-1 57
- Keyboard Assignments 57
- Logic Inputs and Outputs 59
- Setup Menu Presets 60
- User Setups 62
- Setup Menu 63
- • VU only 66
- • Peak only 66
- • Peak-hold only 66
- • Peak+VU 66
- • Peak-hold + VU 66
- Setup Menu Shortcuts 68
- Front Panel Button Shortcuts 69
- Connector Pin Assignments 70
- Specications 71
- Accessories 73
- CE Declaration of Conformity 75
- Software License 76
- Limitation of Liability 77
- Warranty & Service 78
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