Focusrite ISA 828 User Manual

In single-wire mode, switch out, the AES channels 1-8 can be transmitted at sample rates up to 192kHz using only 8 AES
connections. Therefore, channels 1-8 are always available in AES format, regardless of the S/PDIF switch setting.
24-bit/192kHz ADAT™ interface operation
The card provides digital outputs for all eight ISA 828 channels, which operate over the sample frequency ranges
44.1-192kHz. The card features two ADAT™-type ‘lightpipe’ output connectors. For speeds up to 48kHz, both connectors
transmit all 8 channels simultaneously. However, ADAT™-type connectors are bandwidth-limited at sample rates
88.2kHz and 96kHz - each audio channel uses two ADAT™ digital channels to accommodate the increased quantity
of data (SMUXII). At sample rates 176.4kHz and 192kHz, each audio channel uses four ADAT™ digital channels to
accommodate the increased quantity of data (SMUXIV).
The ADAT™ output connectors operate as follows:
44.1/48kHz sample rates:
Connector 1 = channels 1 to 8 in parallel
Connector 2 = channels 1 to 8 in parallel (identical to connector 1)
88.2/96kHz sample rates:
Connector 1 = channels 1 to 4
Connector 2 = channels 5 to 8
1 NC NC AES 7/8+ AES 7/8+ AES 8+ AES 4+
2 GND GND GND GND GND GND
3 NC NC AES 5/6- AES 5/6- AES 7- AES 3-
4 NC NC AES 3/4+ AES 3/4+ AES 6+ AES 2+
5 GND GND GND GND GND GND
6 NC NC AES 1/2- AES 1/2- AES 5- AES 1-
7 AES 7/8+ AES 4+ AES 7/8+ SPDIF 7/8+ AES 4+ SPDIF 7/8+
8 GND GND GND GND GND GND
9 AES 5/6- AES 3- AES 5/6- SPDIF 5/6+ AES 3- SPDIF 5/6-
10 AES 3/4+ AES 2+ AES 3/4+ SPDIF 3/4+ AES 2+ SPDIF 3/4+
11 GND GND GND GND GND GND
12 AES 1/2- AES 1- AES 1/2- SPDIF 1/2- AES 1- SPDIF 1/2-
13 NC NC NC NC NC NC
14 NC NC AES 7/8- AES 7/8- AES 8- AES 4-
15 NC NC AES 5/6+ AES 5/6+ AES 7+ AES 3+
16 GND GND GND GND GND GND
17 NC NC AES 3/4- AES 3/4- AES 6- AES 2-
18 NC NC AES 1/2+ AES 1/2+ AES 5+ AES 1+
19 GND GND GND GND GND GND
20 AES 7/8- AES 4- AES 7/8- SPDIF 7/8- AES 4- SPDIF 7/8-
21 AES 5/6+ AES 3+ AES 5/6+ SPDIF 5/6+ AES 3+ SPDIF 5/6+
22 GND GND GND GND GND GND
23 AES 3/4- AES 2- AES 3/4- SPDIF 3/4- AES 2- SPDIF 3/4-
24 AES 1/2+ AES 1+ AES 1/2+ SPDIF 1/2+ AES 1+ SPDIF 1/2+
25 GND GND GND GND GND GND
ADC Card DB25 Pin Out Configurations
Pin No.
Jumpers disabled
(default) ProTools™
Compatible 44.1 - 96kHz
Jumpers disabled
ProTools™ Compatible
Dual Wire Mode
88.2 - 192kHz
Jumpers enabled Single
Wire Mode 44.1 - 192kHz
Jumpers enabled + S/PDIF
Switch In - Single Wire
Mode 44.1 - 192kHz
Jumpers enabled +
Dual Wire Mode
88.2 - 192kHz
Jumpers enabled + S/PDIF
Switch In + Dual Wire
Mode 88.2 - 192kHz
11

Focusrite ISA 828 Specifications

General

Gain	40 dB
Control type	Buttons, Rotary
Sample rates	48 - 192 kHz
On/off switch	Yes
Phantom power	48 V
Product color	Black
LED indicators	Power, Signal strength
Built-in display	No
Total Harmonic Distortion (THD)	0.002 %
XLR inputs	8
6.35 mm (1⁄4-inch) input	4

Weight and Dimensions

Depth	305 mm
Width	484 mm
Height	85 mm
Weight	8840 g