User's Manual

NETNode
Phase 1 and 2 Units
NETNode
User Manual
NETNode-V2.3
2-61
DS000034 Unclassified
4.9. Configuration Tab – Record Pane
The NetNode unit (Phase 2 only) allows recording of the video from the AVI unit unto a SD
card.
Files are recorded in 30 second lengths, referred to as a „chunk‟, and stored in a compressed
transport stream format. They can be subsequently downloaded either through the WEB
browser from the file system tab, or alternatively the card may be inserted into an external
computer. Files are stored in FAT16 format and so can easily be read. The date and time is
always stored in UTC format regardless of the time-zone setting.
The card should only be removed when the SD card LED is green and not red. This always
occurs at the end of the 30s transfer when record is enabled. Failure to do this may result in
a damaged file system on the card.
The unit currently supports micro SD cards only.
4.9.1. File length
This is the maximum number of files stored on the card the oldest will be removed first. This
should be set so that the number of files does not exceed the capacity of the SD card.
4.9.2. Record
Tick box to start recording. Untick the box to stop.
4.10. Configuration Tab – Audio Pane
NETNode phase 2 contains an audio talkback feature which allows operatives to
communicate over the mesh using their own headset. The system allows each user to talk to
all other users. To use this feature, a headset with microphone needs to be connected to the
unit. The NETNode unit provides a small amount of power to the microphone capsule.
The pin-outs for the talkback audio connectors can be referenced in Section 12.6 T/B - 6-pin
0B LEMO socket (G-key) for the Plain box unit and Section 13.3 Misc Connector Amphenol
38999 Series 3 13-35 22 way chassis socket for the Robust variant.
Note: Phase 1 units do not support Audio Talkback