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- Recall Defaults
- Select Frequency A.
- Select 50 Ω input impedance, 1x attenuation, Manual Trigger Levels and Absolute Trigger Level A 0V.
- Select Preamp ON
- Connect a signal from a HF generator to a BNC power splitter.
- Connect the power splitter to Input A of your counter and an oscilloscope. Set the input impedance to 50 Ω on the oscilloscope.
- Adjust the amplitude according to the following table. Read the level on the oscilloscope. The timer/counter should display the correct frequency.
- Repeat the measurements and input settings above for Input B, D, and E.
| Frequency MHz | Level | Pass/Fail |
| mVrms | dBm |
| 10 | 15 | -23 | |
| 50 | 15 | -23 | |
| 100 | 15 | -23 | |
| 200 | 15 | -23 | |
| 300 | 25 | -19 | |
| 400 | 35 | -16 | |
Table 6. Sensitivity for inputs A, B, D & E at various frequencies
