GSi TYMPSTAR 1, Service Manual

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Troubleshooting
SP Error codes
0020 Self Calibration Failed Signal processor was unable to find a suitable counter value
to produce the target frequency during self-cal procedure.
After SP version 6.0, this error code is unused (self-cal no
longer exists).
Subcodes: Target frequency code (0=226, 1=678, 2=1000,
3-38 = 250-1000 in 50Hz steps)
Likely Causes: Probe tone oscillator circuit; probe tone
oscillator clock.
0023 Invalid Mic Level During Y Calibration Signal processor checks to ensure that the mic VCA level has
not been set too high or too low to accomplish calibration.
Subcodes: None.
Likely Causes: Probe mic circuit.
0024 Invalid Pseudo-Code Instruction Signal processor checks to ensure that the requested pseudo-
code instruction is valid while processing a pseudo-code
template.
Subcodes: Invalid code.
Likely Causes: Software error.
0025 Invalid Pseudo-Code Math Code Signal processor checks to ensure that the requested pseudo-
code math operation is valid while processing a pseudo-code
template.
Subcodes: Invalid math code.
Likely Causes: Software error.
0027 Rotation Error – Theta 2 > Theta1 Signal processor ensures that Theta2 is not greater than
Theta1 during 2.0cc YBG calibration.
Subcodes: Filter mode that failed check (0 = Low Pass
Multiplexed, 1 = Low Pass Steady, 2 = BandPass, 3 = Swept)
Likely Causes: Wrong cavity volume used during calibration.
0035 DPRAM Integrity Failure Signal processor performs a write/read test of DPRAM at
reset.
Subcodes: Address of failure.
Likely Causes: Shorted data lines, open data lines,
intermittent address lines, defective component at U1.
0036 Compliance Calculation Coefficent Out of Range Signal processor checks the calculated value of all
complaince calculation coefficients as they are generated
from calibration data. If this value exceeds 65535, it is
deemed bad data and this exception is generated.
Subcodes: low byte (0
th
and 1
st
nibble) indicates SPL (0 - 27
= 67dB – 93dB); 2
nd
nibble indicates filter mode (0 = Low
Pass Multiplexed, 1 = Low Pass Steady, 2 = BandPass, 3 =
Swept); 3
rd
nibble indicates frequency (0 = 226Hz, 2 =
678Hz, 2 = 1000Hz).
Likely Causes: Bad calibration data in probe.
0037 Scaled Compliance Coefficent Out of Range Signal processor checks the calculated value of all
compliance calculation coefficients as they are scaled during
2.0cc compliance calibration. If this value exceeds 65535, it
is deemed bad data and this exception is generated.
Subcodes: low byte (0
th
and 1
st
nibble) indicates SPL (0 - 27
= 67dB – 93dB); 2
nd
nibble indicates filter mode (0 = Low
Pass Multiplexed, 1 = Low Pass Steady, 2 = BandPass, 3 =
Swept); 3
rd
nibble indicates frequency (0 = 226Hz, 1 =
678Hz, 2 = 1000Hz).
Likely Causes: Bad calibration data in probe; Noise during
calibration.
0040 DFT Limit Too Small While performing 2.0cc compliance calibration, the signal
processor ensures that the measured compliance at a nominal
gain setting allows for enough span in DFT calculation.
Subcodes: Out-of-range nominal DFT base.
Likely Causes: Clogged probe; mic circuit; filter circuit;
wrong cavity size used; bad probe SPL calibration data.
GSI TympStar Version 1 and Version 2 Service Manual 8 - 17