788T Multi-Track Digital Audio Recorder Overview Pt. 3


This is a continuation of an overlook of the 788T where they continue to talk about the versatility of workflows this machine can be a part of. It also continues into it’s versatility by means of meta data and how you can export files into different media, export different file formats for the productions need in dailies, and name tracks and files in different ways to avoid confusion when exporting gigantic track counts. It also goes further to explaining its use towards exporting mono files versus poly files.

This overview of the 788T is a 3 part segment. If you would like to view part one of this overview, you can click here. For part two of this overview, you can click here.  I decided to include the key features of this devices from part two of this overview that way you don’t have to jump between posts.  Take care.

Key Features

  • Eight mic/line inputs, each controlled with front panel, pop-out gain controls
  • 12-track recording, to record iso’s, stereo mix track, and two-track aux, Aux1, Aux2
  • Each input has solo headphone monitoring, 48 V phantom, limiter, polarity reverse, high-pass, and selectable delay
  • Selectable sampling rate converters on each digital input
  • Sampling rate selectable up to 96 kHz
  • AES42 digital microphone support
  • Backlit LCD display viewable in any environment
  • 8 x 13-segment Peak/VU meters with arm LED
  • Word clock in and out with tri-level video sync support
  • Time code generator supports all data rates; holds time code for four hours with no power sources attached
  • Internal 160 GB, 2.5-inch SATA hard drive; 256 GB SSD in the 788T-SSD
  • CompactFlash slot with UDMA support
  • Powered by removable Li-ion rechargeable batteries
  • External DC power input operates unit and charges Li-ion battery
  • Back panel multi-pin connector for one-cable connection to digital mixing board (AES input/output, power, switch closure in/out)
  • FireWire 400/800 and USB 2.0 connections for ultra-fast file tranfer between 788T’s CF and HDD to computer
  • USB keyboard input for control
  • Aluminum & stainless-steel chassis for exceptional durability and light weight
  • Designed for the same operational environmental extremes as Sound Devices field mixers

Specifications

Sampling Frequency:

internal: 32, 44.1, 47.952, 48, 48.048, 88.2, 96, 96.096
external clocking: 32–96.096 kHz via word clock or digital inputs

Internal Data Path and Processing:
32 bit, 192 dB dynamic range

A/D, D/A Converters:
24 bit, 96.096 kHz sample rate maximum

A/D Dynamic Range:
123 dB, A-weighted bandwidth
120 dB, 20 Hz–22 kHz bandwidth

D/A Dynamic Range:
114 dB, A-weighted bandwidth
111 dB, 20 Hz–22 kHz bandwidth

Metering
112-segment (8 x 14), sunlight-viewable, selectable peak, VU, or peak (with or without peak hold) with VU ballistics, variable brightness

Frequency Res. Mic or Line:
10 Hz–20 kHz, +0.1, -0.5 (gain controls centered, measured at 48 kHz)

THD + Noise:
Mic: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, -15 dBu input); line: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, +16 dBu input)

Gain: (input dBu to -20 dBFS)
Mic: Off (0) to 76.0 dB Line: Off, -26.0 to 50.0 dB

Input Impedance
Mic (XLR and TA3): 3.3k ohm; Line (XLR and TA3): 3.3k ohm

Input Clipping Level:
Mic input: +8 dBu minimum (gain = 10 dB); line input: +26 dBu minimum (gain = 0 dB)

Input Topology Mic and Line
fully electronically balanced, RF, ESD, short, and overload protected; pin-2 hot, pin-3 cold

Gain Matching Mic/Line inputs
0.1 dB increments, channel-to-channel while linked

Common Mode Rejection Ratio
Mic: 40 dB minimum at 80 Hz

High-Pass Filters:
40-320 Hz in 10Hz steps @ 6/12 dB/oct (Setup Menu selectable)

Mic Powering:
(each analog input selectable): 48 V phantom through 6.8k resistors, 10 mA per mic available, menu-selected per channel in mic or line level positions

Mic/Line Input Limiters:
Variable threshold -12 to -2 dBFS; Infinite:1 limiting ratio, 2 mS attack time, menu-selectable release time 200-2000 mS, soft-knee starting approximately 6dB below setting.

Line Output Clipping Level:
+24 dBu minimum, 10k ohm load

Attenuation & Resolution:
0–20 dB, 1 dB increments

Output Topology Line:
fully electronically-balanced, RF, ESD, short, and overload protected; pin-2 driven hot, pin-3 driven cold; let pin-3 float for unbalanced connections.

I/O – Digital:
Balanced AES in 1-8 on DE15 connector 110 ohm, 2 V p-p, AES and S/PDIF compatible with RCA adaptor, AES42 mode 1 compatible and provides 10 V to AES42 microphones
AES3 Balanced AES out 1-4 on TA3 connector; Balanced AES out 5-6 on DE15 connector 110 ohm, 2 Vp-p, AES and S/PDIF compatible with RCA adaptor;

Digital Storage:
internal hard drive SATA interface 2.5-in hard drive 4200–7200 RPM supported, solid-state drive (SSD) support, FAT32 formatted, up to 2 TB addressable
CompactFlash CF type I, II, and + (microdrive) compatible, UDMA (300x) compatible, FAT32 formatted, up to 2 TB addressable

File Types:
Record: WAV (AES-31 format), mono or polyphonic, at supported Fs, 24-bit or 16-bit;
Playback: WAV (AES-31 format), mono or polyphonic, at supported Fs, 24-bit or 16-bit;
MP3 @ 32, 64, 96, 128, 160, 192, 256, or 320 kb/s stereo; MP2 @ 64, 96, 128, 160, 192, 256, or 320, 384 kb/s stereo

Utilities:
Drive formatting and speed test for internal hard drive, CF and external drive volumes

Data Transfer / Control:
FireWire 400: For connection to external drives and computers: IEEE-1394a compliant, 6-pin FireWire, Windows 2000, XP, Vista, 7) Mac OS X only
FireWire 800: For connection to external drives and computers: IEEE-1394b compliant, 8-pin FireWire, Windows (2000, XP, Vista, 7), Mac OS X only
USB 2.0: Slave mode only. For connection to Windows( 2000, XP, Vista,7) Mac OS X only
USB Keyboard Input: For connection to USB keyboards, CL-8, and CL-9.

Time Code:
Modes Supported: Off, free run, record run, 24 hour run, external time code receive
Frame Rates: 23.976, 24, 25, 29.97DF, 29.97ND, 30DF, 30ND, 30+
Accuracy: 0.2 ppm, when tuned with Ambient Master Controller, holds TC clock for 4 hours after main battery removal; after 4 hours, retains time of day
Input / Output 20k ohm impedance, 0.3V p-p (–8 dBu) minimum / 1k ohm impedance, 3.0V p-p (+12 dBu)

Word Source:
Internal Sync: internal word clock generator
External Sync Input: Word Clock, AES3, or Video (NTSC, PAL, and Tri-Level)
Word Clock Output: Square wave, running at sample rate, 3.3 V p-p, 75 ohm

Power:
Power supply (batteries): operating cell, removable 7.2 V (nominal) Sony L-type Li-ion, operational from 6.5–8.5 V, time code battery, internal 3.6 Li–ion
Power supply (external): 10–18 V, 1000 mA minimum, via locking 4-pin Hirose connector, use Hirose #HR10-7P-4P (DigiKey# HR100-ND) for locking mating DC connector; pin-1 (-), pin-4 (+).

Environmental:
Operation and Storage ambient temperature 5–55° C, relative humidity (non-condensing) 80%

Other: 
Tone Oscillator: 100 Hz–10 kHz, variable output, assigned to tracks or outputs (menu-selectable)

Dimensions and Weight:
Size: 45 mm x 257 mm x 163 mm (H x W x D) 1.8” x 10.1” x 6.4”
Mass: unpackaged: 1.7 kg, (3 lbs 12 oz.) without battery


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