Fluke                                                       MET/CAL Procedure
=============================================================================
INSTRUMENT:            Fluke 8026B: CAL ADJ /5520
DATE:                  19-Aug-97
AUTHOR:                Fluke Corporation
REVISION:              $Revision: 1.1 $
ADJUSTMENT THRESHOLD:  70%
NUMBER OF TESTS:       1
NUMBER OF LINES:       79
CONFIGURATION:         Fluke 5520A
=============================================================================
#
# Source:
#   Fluke 8026B instruction manual (PN 646414 June 1982).
#
# Compatibility:
#   5500/CAL 5.0 or MET/CAL 5.0 or later
#
# Subprocedures:
#   None
#
# Required Files:
#   None
#
# System Specifications:
#   TUR calculation is based on specification interval of the accuracy file.
#   The default 5520A accuracy file contains 90 day specs.
#
# Fluke makes no warranty, expressed or implied, as to the fitness
# or suitability of this procedure in the customer's application.
#
# The 90 day specifications of the 5520A are used in TUR computations.
#
 STEP    FSC    RANGE NOMINAL        TOLERANCE     MOD1        MOD2  3  4 CON
  1.001  ASK-                          J                                   W
  1.002  HEAD         EQUIPMENT SETUP
  1.003  DISP         [32]                WARNING
  1.003  DISP         HIGH VOLTAGE is used or exposed during the performance
  1.003  DISP         of this calibration. DEATH ON CONTACT may result if
  1.003  DISP         personnel fail to observe safety precautions.
  1.004  HEAD         CALIBRATION ACCESS PROCEDURE
  1.005  DISP         Disconnect the test leads and the battery eliminator
  1.005  DISP         if attached. Open the battery compartment, and
  1.005  DISP         disconnect the battery. Remove the three phillips-head
  1.005  DISP         screws from the bottom of the case. Turn the instrument
  1.005  DISP         face-up, and grasp the top cover at both sides of the
  1.005  DISP         input connectors. Then, pull the top cover from the UUT.
  1.005  DISP         Re-connect the battery to the battery jacks.
  1.006  DISP         Ambient temperature: 21C - 25C.
  1.006  DISP         Relative humidity: less than 80%.
  1.006  DISP         Allow the UUT 30 min. to stabilize.
  1.006  DISP         Turn the UUT on.
  1.007  HEAD         DC VOLTAGE CALIBRATION ADJUSTMENT
  1.008  DISP         [32] Connect the 5520A and the UUT as follows.
  1.008  DISP         [32] 5520A NORMAL HI to 8026B V Ohm S
  1.008  DISP         [32] 5520A NORMAL LO to 8026B COMMON
  1.009  RNG          200mV
  1.010  5520         190mV                                             S  2W
  1.011  DISP         Adjust R5 for a reading of 190.0mV.
  1.012  HEAD         AC VOLTAGE CALIBRATION ADJUSTMENT
  1.013  RNG          200mV                        AC
  1.014  5520         190mV                        100H           SI    S  2W
  1.015  DISP         Adjust the AC CAL potentiometer marked "F" (fine
  1.015  DISP         adjustment- R19) so that it is at mid-range.
  1.015  DISP
  1.015  DISP         Adjust the AC CAl potentiometer marked "C"
  1.015  DISP         (coarse-adjust-R17) for a UUT reading of 190.0
  1.015  DISP         +/- counts.
  1.015  DISP         Then adjust R19 ("F" fine adjust) for a UUT reading
  1.015  DISP         of 190.0 (+/- 1/2 digit).
  1.016  5520         *                                                 S
  1.017  RNG          20V                          AC
  1.018  5520         19V                          7kH            SI    S  2W
  1.019  DISP         Adjust C9 for a reading of 19.00V (+/- 2 digits).
  1.020  5520         *                                                 S
  1.021  RNG          2V                           AC
  1.022  5520         1.9V                         10kH           SI    S  2W
  1.023  DISP         Adjust C2 for a reading of 1.900V (+/- 2 digits).
  1.024  END