DuraCOR 311
Chapter 2 Operational Description
Page 18 of 72
MNL-0667-01 Rev B2
ECO-5941
Effective: 17 Mar 20
Lower the cage and slide it away from the board edge to lock it in place. There will be an audible
click when cage is secured.
Replace the bottom cover and secure the screws to 34.4 in-oz. [0.24 Nm], using thread-locker
(i.e. Loctite 222).
Removal
Power off system and remove the bottom cover
Slide the microSD cage cover toward the board edge (Figure 9)
Lift cage
Remove the microSD card
Lower the cage and slide it away from the board edge to lock it in place. There will be an audible
click when cage is secured.
Replace the bottom cover and secure the screws to 34.4 in-oz. [0.24 Nm], using thread-locker
(i.e. Loctite 222)
Audio
The DuraCOR 311 supports stereo audio. Audio can be used without any modification through the HDMI
port. If audio, this includes microphone, line in, line out, and headphone, is required these signals can be
accessed using the configurable I/O pins. A cable with the P2 connector pinout below will allow the
system to breakout these signals. The second termination on the cable can be any combination of the
configurable I/O which best suits the implementation needs. See Chapter 4, section Configurable I/O
Internal Connectors for manufacturer part number, mating connector, locations and pinouts.
Caution! ESD Sensitive Components
Follow standard ESD and FOD controls to avoid damage to the internal components.
Microphone
Microphone is mono only.
Table 3: Stereo Connector Pinout
P2
Signals
11
Microphone
12
Line In Left
13
Audio GND
14
Line In Right
15
Headphone GND
16
Audio GND
17
Headphone Out Left
18
Line Out Left
19
Headphone Out Right
20
Line Out Right
