abem Terraloc Pro 2 - Page 49

ABEM Terraloc Pro 2
47
If a new shot is received before the <ENT> key is
pressed the previous shot is lost. The last shot added
to the stack cannot be removed by the “delete last
shot” feature
Single
Same as Auto stack, but the instrument has to be
manually armed again for the next shot
Re-arm mode
- If it is set to Auto, the instrument is automatically armed after
a record has been saved. This is useful in, for example, marine
surveys.
If set to Manual the user has to arm the instrument by pressing
<ARM>, or some external arm source has to set the arm input
to its armed state.
Input voltage
range
- Available choices are: 500 mV, 5.0 V and 12.5 V
Input gain (dB)
- This setting complements the Input voltage range setting
Available choices are: 0, 12, 24, 36, 48
Note! Setting the input gain to 0 dB
makes it possible to measure
frequencies down to 0 Hz whereas
higher settings gives measurement
down to 1 Hz
Input impedance
- Set up for different types of sensors. Examples are 3000 Ohm
for Guideline Geo sensors and High for passive hydrophones
Available choices are: 3000 Ohm, 20 kOhm, High (= 20
MOhm)
Table 8 Sampling settings
4.6.5.2 The Trig Settings Category
These settings control when SeisTW will sample data i.e. how sampling will be
triggered (Figure 42).
• Opening the Trig Setup dialog (Acquisition Setup dialog with the Trig tab selected)
― Press <2>