Seismology Instruction with the AS 1

12. There are 2 cables leaving the interface box 

(Figure 10).  The paired shielded coaxial cable 

(attached to the interface box in Step 10) has a 

plug connector on the end.  The other cable has 

a gray 9 pin connector.  Install the 9 pin connec 

tor from the interface box to the serial port on 

your personal computer.  If your serial card has 

a 25 pin connector, you will need to purchase 

a 9  to 25  pin adapter.  If your computer does 

not have a serial port, you can install the AS 1 

through a USB port,  a USB  to serial adapter 

is needed (both available from Radio Shack or 

Figure 10

similar store).

13. Plug the connector end of the paired shielded coaxial cable attached to the                      

interface box to the matching connector on the seismometer base.

14. Plug in the 8 pin cable from the power supply box to the 8 pin slot on the interface box.  

Note the orientation of the pins to avoid damaging the connectors.  Plug in the power cord 

from the power supply to a surge protector (Figure 11).

Figure 11

15. Cover the seismometer with the plexiglass display box.  This will minimize motion of the 

boom due to air currents and keep dust off the instrument and oil.

CAUTION:  If you should decide to move the seismometer, disconnect the boom arm to 

prevent damage to the knife edge and/or coil as a result of the boom arm swinging.

AmaSeis Version 1.0 Level 2005.05.19

2.4