Microsoft LPF-00004 Manual del operador descargar pdf (Pagina 133)

PROGRAMMER'S GUIDE Page 115

YBER

380, COPYRIGHT MARCH 2002, AXON INSTRUMENTS, INC.

if C300.SetCoupling% (1, C300.NEGINPUT, C300.COUPLINGDC) then

print "Error setting CyberAmp - coupling:"; C300.GetLastError%

end

end if

'Now flush out the command queue to the CyberAmp.

if C300.FlushCommands% then

print "Error on flush command:"; C300.GetLastError%

end

end if

'Save the updated CyberAmp state into the EEPROM.

'This set is required if you wish to have the CyberAmp power up with the

'same settings the next time the unit is turned on.

if C300.SaveCurrentState% then

print "Error saving CyberAmp state:"; C300.GetLastError%

end

end if

Suggestions if You are Writing a Data Acquisiton Program

1) Electrode test: the simplest approach is to:

i) Save the current settings of the CyberAmp.

ii) Set the overall gain of every CyberAmp 380 channel to x10.

iii) Set the lowpass filter of every CyberAmp 380 channel to 12 Hz.

iv) Request the electrode test signal.

v) Clear the display and show a single sweep from each channel, 500 ms wide, ±25 mV input-

referred vertical range (±250 mV at the A/D converter inputs). This vertical range

corresponds to an electrode resistance of approximately 50 kΩ. The axes should not be

labeled in kΩ since there is no place to indicate 0 kΩ. Instead, a calibration bar

corresponding to 10 kΩ (10 mV) should be displayed.

vi) After the user indicates readiness to proceed, re-set the CyberAmp 380 to the previous

operating conditions and resume the program.

2) Overload: this can be checked each sweep, or it can be checked only on request by the user.

3) Configuration: because the probes, if present, are identifiable, space should be provided in an

information table to list the probes that are in use.

4) Each time the program is started, it should check to see if any probes have been changed. If so,

the CyberAmp should be reconfigured after querying the user.

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Microsoft LPF-00004 Manual del operador Pagina 133