[EN] English - 15
K405 Issue 3
Calibration - Procedures: mV/Volts output
1. Connect the instrument to the calibration equipment
(Fi
gure
4).
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 two-point
calibration (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 mV or Volts output task (Table 2).
5. Then set the output values that are applicable to the
calibration:
• mV: 0, 30, 60, 90, 120
OR
• Volts (V): 0, 3, 6, 9, 12
6. Make sure that the error is in the specified limits
(Table 14 or Table 15).
Table 14: mV output error limits
Table 15: Volts (V) output error limits
Calibration - Procedures: Hz input/output
1. Connect the instrument to the calibration equipment
(Fi
gure
6).
2. Let the equipment get to a stable temperature
(minimum: 5 minutes since the last power on).
3. Set up the equipment with these conditions:
4. Use the calibration menu (Table 9) to do the calibration.
The display shows the applicable instructions to
complete the calibration.
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 6):
• Hz output calibration check (Figure 6):
6. Measure or supply the specified values (Table 16/17):
Hz then kHz. Make sure that the error is in the specified
limits.
Table 16: Hz error limits (Measure/Supply)
Table 17: kHz error limits (Measure/Supply)
Output
mV
Calibrator
error
(mV)
Permitted
DPI 880 error
(mV)
0 0.000 05 0.01
30 0.000 425 0.02
60 0.000 8 0.03
90 0.001 175 0.03
120 0.000 98 0.04
Output
V
Calibrator
error
(V)
Permitted
DPI 880 error
(V)
0 0.000 000 05 0.001
3 0.000 017 5 0.002
6 0.000 03 0.002
9 0.000 05 0.002
12 0.000 134 0.002
Frequency meter: Gate time = one second
Signal generator: Output = 10V, unipolar,
square wave
Frequency = 990 Hz
DPI 880: Input units = Hz (Table 4)
Input trigger level = 5V (Table 4)
Frequency meter: Gate time = one second
Signal generator: Output = 10V, unipolar,
square wave
DPI 880: Input trigger level = 5V (Table 4)
Units (Table 4): Hz or kHz as
specified in Table 16/17.
Frequency meter: Gate time = one second
DPI 880: Units (Table 5): Hz or kHz as
specified in Table 16/17.
Measure/
Supply
Calibrator
error (Hz)
Permitted
DPI 880 error (Hz)
Hz
25 0.000 175 0.002 0.001 4
100 0.000 7 0.002 0.002 1
250 0.001 75 0.004 0.003 5
500 0.003 5 0.006 0.005 8
990 0.006 93 0.011 0.010 4
Measure/
Supply
Calibrator
error (kHz)
Permitted
DPI 880 error (kHz)
kHz
2.500 0 0.017 5 0.000 2 0.000 042
10.000 0 0.07 0.000 2 0.000 112
20.000 0 0.14 0.000 3 0.000 205
30.000 0 0.21 0.000 4 0.000 298
50.000 0 0.35 0.000 6 0.000 483