VXi VT1529A/B User Manual

Test#

Description

20:

Checks that SCP ID makes sense

30-32:

Checks relay driver and fet mux interface with EU CPU

33,71:

Checks opening of all relays on power down or input overvoltage

34-37:

Check fet mux interface with A/D digital

Test#

Description

40-42:

Checks internal voltage reference

43-44:

Checks zero of A/D, internal cal source and relay drives

45-46:

Checks fine offset calibration DAC

47-48:

Checks coarse offset calibration DAC

49:

Checks internal + and -15 V supplies

50-53:

Checks internal calibration source

54-55:

Checks gain calibration DAC

56-57:

Checks that autorange works

58-59:

Checks internal current source

60-63:

Checks front end and A/D noise and A/D filter

64:

Checks zeroing of coarse and fine offset calibration DACs

65-70:

Checks current source and CAL BUS relay and relay drives and ohm
relay drive

71:

See 33 

72-73:

Checks continuity through SCPs, bank relays and relay drivers

74:

Checks open transducer detect

75:

Checks current leakage of the SCPs

76:

Checks voltage offset of the SCPs

80:

Checks mid-scale strain dac output. Only reports first channel of SCP.

81:

Checks range of strain DAC. Only reports first channel of SCP.

82:

Checks noise of strain DAC. Only reports first channel of SCP.

83:

Checks bridge completion leg resistance each channel.

84:

Checks combined leg resistance each channel.

86:

Checks current source SCP's OFF current.

87:

Checks current source SCP's current dac mid-scale.

88:

Checks current source SCP's current dac range on HI and LO ranges.

89:

Checks current source compliance

90:

Checks strain SCP's Wagner Voltage control.

91:

Checks autobalance dac range with input shorted.

92:

Sample and Hold channel holds value even when input value changed.

93:

Sample and Hold channel held value test for droop rate.