5.4 Detailed OSEIS Decoder Operation
5.4.1 Uphole Geophone Resistance Test
• Press Test button on Front Panel to test Uphole Geophone
• Boom Box 3 Compares reading with internal limits
• Geophone Test includes
o Resistance – measures DC resistance
o Frequency – geophone must be planted in vertical position for frequency to pass
o Damping - geophone must be planted in vertical position for damping to pass
o Sensitivity -geophone must be planted in vertical position for sensitivity to pass
• Flashes Test LED green 4 times if result is within entered limits and there is a sensitivity
reading.
• Flashes Test LED red 4 times if result is outside entered limits or there isn’t a sensitivity
reading.
• Geophone resistance will be shown on the Armed and Ready display.
5.4.2 OSEIS CAP Test
• Press Test button and ARM switch on Front Panel to test CAP
• Flashes Test LED green 2 times if result is within entered limits
• Flashes Test LED red 2 times if result is outside entered limits
• CAP results will be shown on the display.
5.4.3 GPS
• Press GPS button to acquire new GPS position – 10 seconds.
• GPS LED is RED for the first 4 seconds to show the GPS button was pressed.
• Solid green GPS LED with a differential position.
• Flashing green GPS LED with a non-differential position.
• Solid red GPS LED when a bad position was received.
• No GPS LED when no GPS information is received within 10 seconds of pressing the GPS
button.
• The GPS LED’s will stay this way until pressing the GPS button again or taking the next
shot.
5.4.4 Fire Sequence – OSEIS Decoder
• Press both the Arm and Charge switch to Arm the Boom Box and the OSEIS blasting cap.
Arming the OSEIS blasting cap takes between 4 to 6 seconds.
• If the Ready Message is enabled the Ready Message will be automatically sent when the
high voltage capacitor is fully charged, and box is ready to fire.
• When valid Start Code is received from the Encoder unit, the shot sequence is started, and
the fire message is sent to the Cap line and the Shot is fired.
• Test LED will flash green for 4 seconds after shot for Confirmed Time Break is OK
• GPS LED will flash green after shot if first break is detected on Uphole geophone
• GPS LED will flash red after shot if first break is not detected
• The display will show Uphole time, CTB value, and Battery voltage.
To Next Page
Loading...
Need help?
General