Guralp Systems CMG-DM24S12AMS - Manual (Page 10)

CMG-DM24S12AMS Operator's guide
5. Whilst Local is selected in the left-hand pane, the list on the right
details all the data streams coming from any instrument directly
attached to the DM24S12AMS. Clicking on Network will display
all data coming from networked instruments or other Scream!
servers, if there are any. Clicking on the entry for a particular
digitiser picks out streams coming from that digitiser; likewise,
clicking on a Comxx entry will display only streams attached to a
particular Com port.
6. The columns in the table provide useful information about each
stream.
Stream ID: A unique name for the data stream, being a
combination of six letters A – Z and numbers 0 – 9. Streams
ending in “00” carry status information about the internal
digitiser, whilst other streams contain data coming from
connected instruments. The slow-rate environmental channels
(Mux channels) generally have Stream IDs ending in “Mx” where
x is a hexadecimal digit (0 – 9 or A – F), whilst other Stream IDs
are used for seismic data from attached instruments.
Rec.: Whether the data stream is currently being recorded to the
hard disk.
Format: The format of the data the stream is producing; one of 8,
16 or 32 bit.
SPS: The sampling rate of the data stream, in samples per second.
Status streams ending in “00” do not constantly output data and
have an SPS of 0. By default, the stream list is sorted in order of
sample rate, with the status streams at the bottom.
End time: The time the data stream last sent data to Scream!. The
time is taken from the digitiser's internal clock, which can be set
from signals coming from an attached GPS receiver (see “GPS” in
Section 4.1 ).
Date: The date the data stream last sent data to Scream!.
10 Issue B