Output Waveform Rise And Fall Time; Frequency Verification - Wavetek 75 Instruction Manual

(REAR PANEL) MODEL 75
FREQUENCY COUNTER
Figure 5-4. Frequency Verification Equipment Connection
Table 5-5. Frequency Verification
Table 5-6. Frequency Verification Limits
PresslAdjust
1 . Setup, RSET (F2), EXEC (F3)
2. Parameter, SAMPL (F2), Control knob
Remarks
Sets default values.
Set the sample frequency to each of the settings
given in table 5-6. Verify on the frequency counter
that each frequency setting falls within the upper
and lower limits given in the table.
NOTE: Set the frequency counter to measure period.
SETTING
1.0000 MHz
500.0 kHz
300.0 kHz
100.0 kHz
10.000 kHz
1.000 kHz
100.0 Hz
5.8 OUTPUT WAVEFORM RISE AND FALL TIME
This paragraph verifies that the rise and fall time of the
Model 75 output waveform falls within the specified
limits. If the readings are outside the specified limits,
perform the steps given in paragraph 5.4 (Calibration)
and then recheck using this paragraph. If the instrument
still fails to fall within specifications, refer to Section
6
(Troub1eshooting)and Section 4(Circuit Description)for
help in solving the out of tolerance problem.
UPPER LIMIT
1.0001 50 MHz
500.050 kHz
300.045 kHz
100.01 50 kHz
10.001 50 kHz
1.0001 50 kHz
100.01 50 Hz
1 . Interconnect the Model 75 and test equipment as
shown in figure 5-5. Use the 50R termination with
the carbon element in this step.
2. Set the osc~lloscope controls as follows:
Vertical Input CHAN 1
Vertical Gain 2VIDIV
TIMEBASE 0.2 pslDlV
Trig Source External
3. Perform the steps in the order shown in table 5-7.
LOWER LIMIT
0.999850 MHz
499.925 kHz
299.955 kHz
99.9850 kHz
9.99850 kHz
0.999850 kHz
99.9850 Hz
Scans by ArtekMedia O 2006