Frequency Source - Fluke 74X Series Calibration Manual

74X Series
Calibration Manual

Frequency Source

Proceed as follows to verify the Frequency Source function:
1. Connect the UUT to the PM6666 counter as shown in Figure 10.
2. Set the UUT to Source, Frequency, 1.000 Vpp , Square Wave, at 5Hz.
3. Observe that the reading on the PM6666 is within the range shown in Table 12.
4. Use the ScopeMeter to check for a positive square wave, with a 50% duty-cycle
5. Continue through the test points, verifying compliance to specifications.
6. At the last test point, change the UUT to source a Sine Wave. Verify the correct
7. When you are finished, press ctwice on the UUT to set the Source function to off.
PM 6666 TIMER/COUNTER
UUT
Range
10.999 Hz
109.99 Hz
1099.9 Hz
21.999 kHz
50 kHz
1099.9 Hz
22
(±5%), and 1.0V peak amplitude. Observe that the amplitude is within the range
shown in Table 12. The HP3458A can also be used to check the RMS value of the
signal.
frequency, waveform, and amplitude.
This saves battery life.
DC-120 MHz
Figure 10. Frequency Source Verification Connections
Table 12. Frequency Source Verification Points
Frequency
@ 1 Vpp
5 Hz
50 Hz
500 Hz
10 kHz
50 kHz
Sine Wave
1000 Hz
V mA mA V
RTD
RTD
CAT
SOURCE MEAS
30V 300V
TC
MAX MAX
30V 30V
MAX MAX
FLUKE 74X
Minimum Maximum
Freq. Freq.
4.99 5.01
49.9 50.1
499.9 500.1
9.998 10.002
49.995 50.005
999.9 1000.1
Use Channel A
BNC Input
93 50 MHz SCOPEMETER
FLUKE SCOPEMETER
Amplitude Tolerance
+/- mV peak +/- mV RMS
80 40
80 40
80 40
150 75
350 175
80 28.29
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