Triggering; Tip For Video Signal Measurements; Specifications - Fluke 199CM User's Manual Supplement

Fluke 190B/C Medical
User Manual

Triggering

The extended offset range allows you to shift the signal up
and down. Be aware that only the "visible" part is sampled
by the ADC, and that the trigger level has to stay in the
visible area too. Depending on what you are looking for, it
might be required to switch to Edge Trigger or to
time-qualified Pulse Trigger mode.

Tip for video signal measurements

To gain full profit of the Extended Offset for video signal
measurements:
• use the 50 Ω 10:1 attenuator feed-through terminator
• select Probe on A attenuation 10:1
• select range 500 mV/d
Now you can move the trace down for 16 divisions.
2-6

Specifications

Maximum trace offset with respect to center screen:
Vertical ranges 2 mV to 50 mV/div (direct 1:1):
positive going signals ...................................... -16 div
negative going signals ................................... +10 div
Other vertical ranges:
positive going signals ........................................ -8 div
negative going signals ..................................... +8 div