03 Invalid input
12 Battery voltage too low or too little inrush current
21 GSI Parity
23 GSI Terminator
24 GSI Buffer overrun> 20 character
25 GSI Data Format
26 GSI last command unfinished
52 temperature too high
53 Temperature too low
55
    a) reflection, poorly targeted
    b) Reception signal too small, measuring time> 30sec
    c) Fluctuations too high
    d) too much background radiation
56 Delta distance in DIL measurement program> 99.9mm
57 Distance too short for LDIL measurement program
62 invalid WI
70 APD break voltage
71 APD slope
72 Synthesizer not docked
73 Reference frequency deviation> ± 2500 Hz
74 Receiver noise too high
75 Temperature sensor Osz. malfunction
76 Temperature sensor APD defective
77 AD-offset
78 ADC error
79 battery balance
80 Timer 0 overrun
82 Measuring signal too big
83 Internal measurement signal too high
84 Internal measurement signal too small
85 Motor for optical path switching defective
86 Filter motor defective
87 Position detector for filter motor defective
88 Filter motor incorrectly calibrated
89 Internal constant lost
90 Quartz constants are missing
91 division with zero
92 Floating format
93 Exponent underflow
94 Exponent overflow
95 Conversion
96 RAM error
97 EPROM error
98 EEPROM error
99 Wrong device identification