Vertical Deflection; Low-Frequency Response - Fluke Autoranging CombiScope PM3370B Reference Manual

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Requirements:
- The vertical deflection must be 4.2 divisions or more. For the bandwidth limiter
the requirement is 4.2 div approximately at 20 MHz.
Repeat the above settings and procedure for CH2, CH3 and CH4. PM3370B/80B/
90B: check CH2 and TRIG VIEW via EXT TRIG input. Oscilloscope in 1V/div and
generator voltage 5 Vpp into 50Ω. Termination resistor directly at generator
output. Use a BNC / probe tip adapter between termination and 10:1 probe. Adjust
the amplitude at 50 kHz to 5 divisions. Check that the amplitude at higher
frequencies does not drop below 3.5 div.
- Press the ANALOG key ('DIGITAL MODE' is displayed briefly) and repeat the
tests in this section for the digital mode. Adjust the MAIN TB TIME/DIV if
required.
4.3.11

Vertical deflection; low-frequency response

This test verifies the lower transition point of the vertical bandwidth.
Test equipment:
Fluke 5500A mode: wavegen, wave sine (Alternative: function generator PM5136).
Test set up:
PERFORMANCE TEST