4 - 40
PERFORMANCE TEST
PM3394B: repeat the procedure for CH2, CH3 and CH4 for the frequencies
50 kHz (0.6 division input signal) and 300 MHz (2 division input signal)
PM3390B: repeat the procedure for CH2 and the EXTTRIG input for the
frequencies 50 kHz (0.6 division input signal) and 300 MHz (2 division input signal)
Press the ANALOG key (’DIGITAL MODE’ is displayed briefly), then repeat the
tests in this chapter for the digital mode.
Press the ANALOG key (’ANALOG MODE’ is displayed briefly) to return to analog
mode.
4.3.35
MAIN TB triggering PM3370B/3380B/3384B; trigger sensitivity via
CH1, CH2, CH3 and CH4 (EXT).
The trigger sensitivity depends on the amplitude and frequency of the trigger
signal. In this test the main timebase trigger sensitivity via the CH1, CH2, CH3 and
CH4 inputs is checked. For PM3370B and PM3380B, this is checked for CH1, CH2
and the EXTernal TRIGger input. For PM3370B; frequency setting between ().
Test equipment.
Fluke 5500A mode: levsine (Alternative: constant amplitude sine wave generator
(SG 503)
Test set-up:
Settings/procedure and requirements:
1
-
Apply a 50 MHz (30 MHz) sine-wave signal of 1 V(pp into 50
Ω
) to input
CH1.
2
-
Press the AUTOSET key and set CH1 to 0.5V/div.
3
-
Use a 50
Ω
termination.
4
-
Set the input coupling of CH1 to DC and POSition the signal in the vertical
center of screen.
5
-
Select ’trig’ from the menu under the TB MODE menu key.