Back Panel Interface
43
LM 26 Operation Manual rev 1.1.8
7.3.1
Primary Network Connection
The Primary Network connection is used for Lake Controller connectivity and Dante digital audio. Please
refer to section 4.2 for additional information.
7.3.2 Secondary Network Connection
The Secondary Network connection may be used for a redundant Dante digital audio network. Please refer
to section 4.2 for additional information.
7.4 GPIO Connection
7.4.1
9-Pin GPIO Connector
A General Purpose Input/Output (GPIO) connection is provided, allowing interface to external devices such
as fire alarm systems for emergency muting, processor power control, or preset recall. The GPO function
allows fault and state monitoring via external systems. Figure 7-11 in conjunction with Table 7-3 describes
the pinout configuration for the GPIO connector.
Figure 7-11: 9-Pin GPIO Connector and Pinout Reference
Pin No.
Description
1
GPI 1a
2
GPI 1b
3
GPI 2a
4
GPI 2b
5
Chassis Ground
6
GPO 1a
7
GPO 1b
8
GPO 2a
9
GPO 2b
Table 7-3: GPIO Pinout Wiring Reference
GPIO configuration is available via the LM 26 front panel interface or via the Lake Controller software.
Please refer to section 6.10.4.4 of this manual for additional information on adjustment via the front panel,
and refer to the Lake Controller Operation Manual for information on adjusting via software interface.
