Fluke                                                       MET/CAL Procedure
=============================================================================
INSTRUMENT:            Beckman RMS225: CAL ADJ /5520
DATE:                  27-Aug-97
AUTHOR:                Fluke Corporation
REVISION:              $Revision: 1.1 $
ADJUSTMENT THRESHOLD:  70%
NUMBER OF TESTS:       10
NUMBER OF LINES:       105
CONFIGURATION:         Fluke 5520A
=============================================================================
#
# 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.
#
 STEP    FSC    RANGE NOMINAL        TOLERANCE     MOD1        MOD2  3  4 CON
  1.001  ASK-                        P                            F        V
  1.002  ASK+           K                              X
  1.003  HEAD         PRELIMINARY INSTRUCTIONS
  1.004  DISP         Warm-up time: NONE
  1.004  DISP         Temperature: 18 - 28 degC
  1.004  DISP         Humidity: <80%
  1.005  DISP         [32]                  WARNING
  1.005  DISP         HIGH VOLTAGE is used or exposed during the performance
  1.005  DISP         of this calibration.  DEATH ON CONTACT may result if
  1.005  DISP         personnel fail to observe safety precautions.
  1.006  DISP         [32]                  WARNING
  1.006  DISP
  1.006  DISP         To prevent a shock hazard, remove all test leads
  1.006  DISP         from the instrument and turn the instrument OFF
  1.006  DISP         before disassembling the RMS225.
  1.006  DISP
  1.007  HEAD         DISASSEMBLING INSTRUCTIONS
  1.008  DISP         1. Remove the unit from the holster(if necessary)
  1.008  DISP
  1.008  DISP         2. Place the unit face down and remove the
  1.008  DISP         [32]  four screws securing the rear cover.
  1.008  DISP
  1.008  DISP         3. Remove the rear cover.
  1.009  HEAD         LCD ADJUSTMENT
  1.010  DISP         Set the RMS225 FUNCTION to V(DC).
  1.010  DISP
  1.010  DISP         Short the V-OHM input to the COM input.
  1.011  OPBR         The LCD ADJUSTMENT is for the Self-resetting
  1.011  OPBR         fuse models ONLY!
  1.011  OPBR
  1.011  OPBR         Does this unit have the self-resetting fuse?
  1.012  JMPF         1.015
  1.013  DISP         ADJUST - R26(lower left) for sharp LCD segments
  1.013  DISP         without ghosting.
  1.014  RSLT         =R26 was ADJUSTED for a sharp LCD display.
  1.015  HEAD         {BASIC (DC)}
  1.016  DISP         Connect the 5520A to the UUT as follows:
  1.016  DISP         [32] 5520A NORMAL HI to UUT V/OHM
  1.016  DISP         [32] 5520A NORMAL LO to UUT COM
  1.017  5520         2.500V                                            S  2W
  1.018  DISP         Adjust R6 (DC Cal) for EXACTLY 2.500 on display.
  1.019  5520         -2.500V        0.002U                                2W
  2.001  JMP          2.004          PASS
  2.002  OPBR         Negative reading is not -2.500 +/-0.002V.
  2.002  OPBR         Would you like to repeat the adjustment?
  2.003  JMPT         1.017
  2.004  HEAD         {AC VOLTAGE}
  2.005  DISP         Set the RMS225 FUNCTION to V(AC).
  2.006  5520         0.000V         0.008U                                2W
  3.001  5520         2.500V                       60H            SI    S  2W
  3.002  DISP         Adjust R15 (AC Full Scale) for EXACTLY 2.500 +/-.002.
  3.003  5520         2.500V                       10kH           SI    S  2W
  3.004  DISP         Adjust C28 (10kHz) for EXACTLY 2.510 +/-.004.
  3.005  5520         2.500V         0.014U        10kH           SI       2W
  4.001  JMP          4.004          PASS
  4.002  OPBR         UUT does not read 2.500 +/-0.014V.
  4.002  OPBR         Would you like to repeat the adjustment?
  4.003  JMPT         3.003
  4.004  5520         25.00V                       10kH           SI    S  2W
  4.005  DISP         Adjust C29 (10kHz) for EXACTLY 25.10 +/-.04.
  4.006  5520         25.00V         0.14U         10kH           SI       2W
  5.001  JMP          5.004          PASS
  5.002  OPBR         UUT does not read 25.00 +/-0.14V.
  5.002  OPBR         Would you like to repeat the adjustment?
  5.003  JMPT         4.004
  5.004  HEAD         {AC FREQUENCY RESPONSE}
  5.005  5520         0.800V         0.02U         1kH            SI       2W
  6.001  5520         0.800V         0.02U         10kH           SI       2W
  7.001  5520         2.500V         0.046U        60H            SI       2W
  8.001  5520         2.500V         0.046U        10kH           SI       2W
  9.001  5520         25.00V         0.46U         10kH           SI       2W
 10.001  HEAD         ASSEMBLY INSTRUCTIONS
 10.002  DISP         Disconnect ALL connections and turn unit OFF.
 10.002  DISP
 10.002  DISP         Replace the rear cover and tighten the four screws.
 10.003  END