[EN] English -
11
K395 Issue 3
5. To make sure that the calibration is correct, set up the
equipment to do one of these calibration checks:
• Hz input calibration check (Figure 1):
• Hz output calibration check (Figure 2):
6. Measure or supply the specified values (Table 10/11):
Hz then kHz. Make sure that the error is in the specified
limits.
Table 10:
Hz error limits (Measure/Supply)
Table 11:
kHz error limits (Measure/Supply)
Calibration - Procedures (mA input)
1. DPI 842 only. Connect the instrument to the calibration
equipment (Figure 5).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Use the calibration menu (Table 9) to do a three-point
calibration (-FS, Zero and +FS). The display shows the
applicable instructions to complete the calibration.
4. To make sure that the calibration is correct, select the
applicable mA input task (Table 2) and apply these
values:
• mA: -55, -40, -24, -18, -12, -6, 0 (open circuit)
Then mA: 0, 6, 12, 18, 24, 40, 55.
5. Make sure that the error is in the specified limits
(Table 12).
Table 12:
mA input error limits
Calibration - Procedures (Amplitude output)
1. Connect the instrument to the calibration equipment
(Figure 2).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Set up the DPI 841/842 with these conditions:
4. Use the calibration menu (Table 9) to do the
Square
Wave
calibration. The display shows the applicable
instructions to complete the calibration.
5. Change the output waveform to
Sine Wave
(Table 5).
6. Use the calibration menu (Table 9) to do the
Sine/Triangular Wave
calibration. The display shows
the applicable instructions to complete the calibration.
Frequency meter: Gate time = one second
Signal generator:
Output = 10V, unipolar,
square wave
DPI 841/842:
Input trigger level = 5V (Table 4)
Units (Table 4): Hz or kHz as
specified in Table 10/11.
Frequency meter: Gate time = one second
DPI 841/842:
Units (Table 5): Hz or kHz as
specified in Table 10/11.
Measure/
Supply
Calibrator
error (Hz)
Permitted
DPI 841/842 error (Hz)
Hz
25
0.000175
0.002
0.0014
100
0.0007
0.002
0.0021
250
0.00175
0.004
0.0035
500
0.0035
0.006
0.0058
990
0.00693
0.011
0.0104
Measure/
Supply
Calibrator
error (kHz)
Permitted
DPI 841/842 error (kHz)
kHz
2.5000 0.0175
0.0002
0.000042
10.0000 0.07
0.0002
0.000112
20.0000 0.14
0.0003
0.000205
30.0000 0.21
0.0004
0.000298
50.0000 0.35
0.0006
0.000483
Applied
mA
Calibrator
error
(mA)
Permitted
DPI 841/842 error
(mA)
±55
0.0022
0.005
±40
0.0018
0.004
±24
0.0014
0.003
±18
0.0004
0.003
±12
0.0003
0.002
±6
0.0002
0.002
0 (open circuit)
-
0.001
Output Hz = 0 (For direct current output)
Output amplitude: Set to Unipolar (Table 5)
Output waveform =
Square Wave
(Table 5)
Calibration values: Low = 0.1V, High = 20V
Calibration values: Low = 0.1V, High = 20V
Summary of Contents for Druck DPI 841
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