Guralp Systems CMG-DCM build <10,000 - Manual (Page 189)

Acquisition Modules and Platinum Firmware Transmitting Data
Send ack packets: This check-box, when ticked, enables the use of
acknowledgement packets. These are not normally required when the
connection between the client and server is reliable.
Installation id: This field allows the user to specify the installation ID that
will be supplied to the EarthWorm installation.
Module id: This field allows the user to specify the module ID that will be
supplied to the EarthWorm installation.
Inject SOH data: This check-box, when ticked, causes the service instance to
generate special state-of-health (SoH) packets and send them to the
EarthWorm installation.
Value for the SOH message type: State-of-health packets should have a
distinct message type to distinguish them from seismic data packets. If the
previous check-box is ticked, use this field to specify the message type. This
value must match the value of TYPE­GCFSOH_PACKET in the EarthWorm
configuration file.
Length of the send queue: This field controls the size of the buffer used for
sending data and should match the parameter SendQueueLength in the
EarthWorm export_ack configuration file.
12.3.1.3 Channels tab
MAN-EAM-0003 189 Issue E - February 2014