Legend Audio ISA 828 User Manual
Page 11
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
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