Inside the DM24
7.3.2.2 Loading a new system program
To update the system firmware, press
at the maintenance menu. The digitiser
will display
Update System program
The digitiser will then request a transfer using the Xmodem protocol, as described
above.
Whilst the file is loading, a progress window will be displayed. Depending on the
speed of the link, it may take up to 20 minutes to transfer the firmware.
Once the file is fully transferred, the DM24 will return to the maintenance menu.
Press
ENTER
, and wait whilst the system boots.
7.3.2.3 Loading new DSP code
Press
at the maintenance menu. The digitiser will reply with
Enter 0/1 to select DSP code to update
Select which of the two DSP code slots you want to overwrite, and press
ENTER
. The
default is always 0.
Enter Filename/date – upto 31 characters
You can enter a descriptive string for the DSP code here. The DM24 will print this
string at every boot-up, to remind you which version of the DSP code you are using.
Note:
The EAM and other automated systems populate this with a string
like:
dsp1091.bin loaded 2016-09-23
When you press
ENTER
, the digitiser will then request a transfer using the Xmodem
protocol, as described above.
7.4 Setting up external triggering
Güralp digitisers and digital instruments can be supplied with external triggering
capabilities installed. The external trigger system is designed for maximum
flexibility: you can trigger other digitisers or your own equipment using built-in
relays, or any equipment may be used as a trigger source. In addition, a trigger
circuit can link together any number of digitisers so that they trigger simultaneously
when they receive a signal.
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Issue U - December, 2021
