5080A
Service Manual
54
# Apply nominal -DC Current to A40
1.034 IEEE OUT -.33mA, 0HZ; OPER; *OPC?[I][GTL]
1.035 IEEE [D5000][GTL]
1.036 ACMS G
1.037 5790 A
1.038 MATH M[18] = (ABS(MEM) + M[18]) / 2
1.039 IEEE OUT 3mA, 0HZ; OPER; *OPC?[I][GTL]
1.040 IEEE [D15000][GTL]
1.041 ACMS G
1.042 5790 A SH N 2W
1.043 MATH M[19] = MEM
# Apply nominal -DC Current to A40
1.044 IEEE OUT -3mA, 0HZ; OPER; *OPC?[I][GTL]
1.045 IEEE [D5000][GTL]
1.046 ACMS G
1.047 5790 A SH N 2W
1.048 MATH M[19] = (ABS(MEM) + M[19]) / 2
1.049 IEEE CAL_START MAIN,AI; *OPC?[I][GTL]
1.050 IEEE CAL_NEXT; *OPC?[I][GTL]
1.051 HEAD Calibrating 3.2999mA @ 100Hz
# cal_next is required for initial start.
# after sending AIG330U if you send cal_next 5520A tries to
# start the cal at that time.
# 3.2999mA @ 100Hz
1.052 IEEE *CLS;OPER; *OPC?[I][GTL]
1.053 IEEE [D5000][GTL]
1.054 ACMS G
1.055 5790 A SH N 2W
# Calculate difference between the average value of both polarities of DC
# Current and the applied AC Current.
1.056 MATH M[21] = 0.0032999 - (.0032999 * (1 - (MEM / M[17])))
# Determine measurement frequency to retrieve correct AC-DC difference value.
1.057 IEEE OUT?[I$][GTL]
1.058 MATH M[2] = FLD(MEM2,5,",")
# Retrieve AC-DC difference from data file named "A40-10mA"
1.059 DOS get_acdc A40-10mA
1.060 JMPT 1.064
1.061 OPBR An error occurred during get_acdc
1.061 OPBR Press YES to try again or NO to terminate.
1.062 JMPT 1.059
1.063 JMP 1.231
# Correct the calculated value of AC Current by adding the AC-DC difference
# of the A40-series shunt used at the frequency under test
1.064 MATH MEM = (M[21] * MEM) + M[21]
# Store corrected value into the UUT
1.065 IEEE CAL_NEXT [MEM]; *OPC?[I][GTL]
1.066 IEEE ERR?[I$][GTL]
1.067 MATH MEM1 = FLD(MEM2,1,",")
1.068 JMPT 1.231
# 'Ask' UUT for next value to calibrate
1.069 IEEE CAL_REF?[I][GTL]
Figure . Sample MET/CAL Program (cont)
DC Volts Calibration (AUX Output)
To calibrate the auxiliary dc voltage function, use the same procedure as shown
for the normal dc voltage output, but use the AUX HI and LO terminals on the
UUT. Table 38 shows the calibration steps for AUX dc volts.
Table 38. Calibration Steps for AUX DC Current
Steps Output (Aux)
1 300.00 mV
2 3.0000 V
3 7.000 V
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