User Contributed                                           MET/CAL PROCEDURE
=============================================================================
INSTRUMENT:            B&K 2131: Digital Frequency Analyzer
DATE:                  24-Sep-97
AUTHOR:                User Contributed
REVISION:              0
ADJUSTMENT THRESHOLD:  70%
NUMBER OF TESTS:       8
NUMBER OF LINES:       92
CONFIGURATION:         Fluke 5700A
STANDARD:              B&K 4220
=============================================================================
 STEP    FSC    RANGE NOMINAL        TOLERANCE     MOD1        MOD2  3  4 CON
  1.001  ASK-   R     N              P             M              F        W
  1.002  ASK+                                          X
  1.003  HEAD         INITIAL CONDITIONS
  1.004  DISP         Connect the UUT as follows:
  1.004  DISP         5700 A V/OHM/A OUTPUTS ............... UUT DIRECT IN
  1.005  CALL         2131 Attenuator Sub
  1.006  CALL         2131 Linearity Sub
  1.007  CALL         2131 Frequency Response Sub
  1.008  HEAD         {* "A" Weighting Filter *}
  1.009  JMP          2.001
  1.010  EVAL
  2.001  DISP         Set the UUT as follows:
  2.001  DISP         FREQUENCY RANGE .................... 1.6 - 1.25k
  2.001  DISP         CENTER FREQUENCY ................... 1.00 KHZ
  2.001  DISP         A WEIGHTING ........................ On
  2.002  DISP         Set UUT attenuator for 130dB full scale.
  2.003  5700         1V                           1kH                  S  2W
  2.004  MEMI         Enter the UUT LEVEL indication in dB.
  2.005  MEME                                                     >1
  2.006  DISP         Set the UUT as follows:
  2.006  DISP         CENTER FREQUENCY ................... 10 HZ
  2.006  DISP         INPUT ATTEN. ....................... 100 dB
  2.007  5700         1V                           10H                  S  2W
  2.008  MEMI         Enter the UUT LEVEL indication in dB.
  2.009  MATH         mem1= m[1] - 70
  2.010  MEME
  2.011  MEMC         d              5.0U          10H
#!          Test Tol 5, Sys Tol 0.00065, TUR 7692.308 (>= 4.00).
  3.001  DISP         Set the UUT as follows:
  3.001  DISP         CENTER FREQUENCY ................... 100 HZ
  3.001  DISP         INPUT ATTEN. ....................... 130 dB
  3.002  5700         1V                           100H                 S  2W
  3.003  MEMI         Enter the UUT LEVEL indication in dB.
  3.004  MATH         mem1= m[1] - 18
  3.005  MEME
  3.006  MEMC         d              5.0U          100H
#!          Test Tol 5, Sys Tol 8.2e-005, TUR 60975.610 (>= 4.00).
  4.001  DISP         Set the UUT as follows:
  4.001  DISP         FREQUENCY RANGE .................... 25 - 20k
  4.001  DISP         CENTER FREQUENCY ................... 5.00 KHZ
  4.002  5700         1V                           5kH                  S  2W
  4.003  MEMI         Enter the UUT LEVEL indication in dB.
  4.004  MEME
  4.005  MEME                                                     <1
  4.006  MEMC         d              5.0U          5kH
#!          Test Tol 5, Sys Tol 8.2e-005, TUR 60975.610 (>= 4.00).
  5.001  DISP         Set the UUT as follows:
  5.001  DISP         CENTER FREQUENCY ................... 20 KHZ
  5.002  5700         1V                           20kH                 S  2W
  5.003  MEMI         Enter the UUT LEVEL indication in dB.
  5.004  MATH         mem1= m[1] - 12.5
  5.005  MEME
  5.006  MEMC         d              5.0U          20kH
#!          Test Tol 5, Sys Tol 8.2e-005, TUR 60975.610 (>= 4.00).
  6.001  HEAD         {* Preamp Input *}
  6.002  JMP          7.001
  6.003  EVAL
  7.001  STD          B&K 4220
  7.002  DISP         Disconnect the 5700A from the UUT DIRECT INPUT>
  7.003  DISP         Connect microphone capsule (DTB# 13-53-2) to the
  7.003  DISP         UUT PREAMP INPUT.
  7.004  DISP         Set the UUT as follows:
  7.004  DISP         INPUT .............................. Preamp
  7.004  DISP         FREQUNCY RANGE ..................... 1.6 - 1.25k
  7.004  DISP         CENTER FREQUENCY ................... 250 HZ
  7.005  DISP         Insert the UUT microphone into the
  7.005  DISP         Model 4220 Piston Phone.
  7.006  DISP         Turn on the Piston Phone.
  7.007  MEMI         Enter the UUT LEVEL indication.
  7.008  MATH         mem1 = 123.9
  7.009  MEME
  7.010  MEMC         d              0.2U
#! T.U.R. not calculated because System Uncertainty not available.
  8.001  END
#! T.U.R.s less than 4.00:                  0
#! T.U.R.s estimated using RANGE value:     0
#! T.U.R.s not calculated (ASK- U):         0
#! T.U.R.s not computable at compile time:  1
#! FOR JUSTIFICATION REFER TO COMMENTS FOLLOWING EACH TEST IN THIS LISTING.