Sound-devices 722 User Manual download pdf (Page 18)

722 User Guide and Technical Information

v. 2.67 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

tion upon input two. Engaging or disengaging phantom power or the high pass ﬁlter on input two

causes no effect on input one.

If MS stereo linking is selected for inputs, program sent to tracks and headphones will be L/R stereo pro-

gram. To record discrete M and S signals, do not link for MS, but monitor the MS signal in headphones.

Things to consider when Linking Input 1,2 as MS:

• Digital Inputs cannot be linked as an MS pair.

• If linking Line Inputs as an MS pair, the Setup Menu option Line Input 1,2: Gain Ctrl

must be set to Use Front Panel Knobs.

Digital Input – AES3

The 722 accepts AES3 (AES/EBU) balanced digital at the input 1 XLR connector. Digital input is two-

channel—AES3 signals on XLR-1 appear at inputs 1 and 2. To use the AES3 input, the input mode-se-

lect switch must be set to AES/EBU. There is no level control for AES inputs.

The front panel digital input LEDs illuminate when digital signal is selected as input. If the

LED is ﬂashing, digital input is selected but a no valid digital clock is being received.

Digital Input – AES3id (S/PDIF)

The 722 accepts AES3id and S/PDIF unbalanced digital signals on the BNC connector. The 722 will

auto detect the type of digital signal and adjust accordingly. Like AES3 signals, this is two channel

input. There is no level control for AES3id inputs.

AES3id inputs override analog signals present at the XLR inputs. To use analog sources while using

the AES3id signal as a digital clock source, select analog in the input source menu selection.

When a digital signal is present, the 722 locks its sample rate to its source frequency. This lock is indi-

cated by a highlighted block on the main LCD display to the right of the bit depth and sample rate

indicators. Recording bit depth is independent of the external digital source.

When locking the 722 to an external digital signal, be certain the source is stable. Loss of digital

signal will cause the 722 to revert to its internally set sample rate, even while recording. The portion

of the ﬁle recorded after the loss of signal may not play back properly. Once recording has begun,

unused digital inputs are muted, digital signals that appear on them after the record key has been

pressed will not be recorded or affect the sample rate of the 722.

The 722 clocks itself to the ﬁrst digital signal presented to it. If the 722 detects a digital signal on the

BNC inputs and locks to that signal, a digital signal applied to the XLR input will be ignored until the

ﬁrst digital signal is removed.

Signal Presence and Peak Indicator

The signal presence and peak indicators show audio activity before input-to-track routing. In-

put signal presence LED’s illuminate when a –50 dBFS or greater signal is present. Input signal peak

LEDs illuminate when signal levels reach –3 dBFS or greater.

Input Delay

A digital delay is selectable on each channel of the 722. Delay time per input is selectable in tenths of

a millisecond (0.1 msec) steps. The Rotary Switch and menu arrows are accelerated. The more you

press or spin, the faster the time setting will increase or decrease. Delay is not set until the Rotary

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 79 80

No comments

Sound-devices 722 User Manual Page 18