Sib Geofiz Pribor Ltd
string number can be immediately edited during testing (Section “4.5 Testing geophone
strings”).
4.4.2.2. Series
This parameter specifies a number of series-connected geophones and can take values
from 1 to 99.
4.4.2.3. Parallel
This parameter specifies a number of parallel
identical
branches, each composed of
series-connected geophones. The parameter can take values from 1 to 99.
4.4.2.4. Cable Resistance per Unit Length
This parameter specifies resistance per unit length of the cable used to wire a
geophone string and can take values from 0 to 1000 Ohms/km.
4.4.2.5. Interval
This parameter specifies the cable length between series-connected geophones and
can take values from 0 to 1000 metres.
4.4.2.6. Lead-in cable length
This parameter specifies the length of cable between connector and the end geophone
in an string. It can take values from 0 to 1000 metres.
4.4.2.7. Presence of shunts
This parameter determines whether geophones in an string are used with or without
shunts. It can take values “Yes” or “No”.
4.4.2.8. Shunt resistance
This parameter specifies the resistance of geophone shunts and can take values from 0
to 10,000 Ohm.
4.4.3.
Setup menu… - Sequence of tests…
The “Sequence of tests” dialogue menu has two functions:
setting up the sequence of tests for subsequent automatic execution;
starting up continuous execution of an individual test (or test group).
Each menu option allows enabling or disabling any test and adjusting additional settings
for its execution. From this point on, after starting up of automatic execution of test
sequence (see Section “4.5. Testing Geophone strings”), only tests enabled in this
menu will be executed. Editing menu options is performed as described in Section “4.3.
Tester menu navigation”.
ATTENTION! A change in test settings is valid only until the Tester is
switched off. To save changes, execute the “Main Menu” −> “2 Setup
menu…” −> “8 Save settings” sequence.
Start-up of continuous execution of an individual test or test group is performed by
pressing the “START-STOP” button. As this takes place, the test results are not saved
but displayed on the screen and permanently updated. The possibility of continuous
testing is extremely useful for trouble shooting in a geophone string.
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