Zeiss humphrey HFA II-i series Field Service Manual page 298

Appendix H
HFA II - i Blue-Yellow Verification Data Printout
(Refer to sample printout on following page)
(13) Indicates whether the verification data was obtained either BEFORE or AFTER servicing the
HFA II - i.
(14) Serial number of the HFA II - i.
(15) Serial number of the Soligor lightmeter being used to perform the verification.
(16) Revision level of the system software currently installed in the instrument.
(17) The multiplier values (P3B and P3Y) written on the calibration label and affixed to the
Soligor lightmeter being used to perform the verification. (Note: BYP3 and P3 are the older
multiplier values used to calibrate Blue-Yellow intensities. The newer values are P3B and P3Y.)
(18) The current blue projector voltage required to obtain a 0 dB light intensity value displayed in
Ft-L.
(19) The dB spread or amount of dB difference between the highest and lowest light intensity data
points appearing on the graph (including the BOWL). For the Blue Light Verification Data
Printout, this value must be 1.5 dB or less.
(20) A numerical and graphical representation of each measured spot value (0 dB - 23 dB) and
the BOWL value. The tolerances (MIN and MAX) as well as the actual measured value
(READING) for each data point are indicated in Ft-L.
(21) The asterisk indicates a value which is out of tolerance. (Note: The data points at 18 dB and 23
dB are not used during field service evaluation.)
(22) Light intensity data points. Five data points (including the BOWL) are plotted indicating the
attenuation produced by the glass and film wedges.
(23) Location to be signed by the service engineer performing the verification.
Field Service Guide
Humphrey Field Analyzer II - i
Confidential and Proprietary
H - 10 52235C1105