35
Subject to change without notice
15.1 CH I: 2:1 Attenuator
– Set attenuator CH I to 10 mV/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
15.2 CH I: 4:1 Attenuator
– Set attenuator CH I to 20 mV/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
15.3 CH I: 10:1 Attenuator
– Set attenuator CH I to 50 mV/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
15.4 CH I: 100:1 Attenuator
– Set attenuator CH I to 0.5 V/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
15.5 CH I: 10:1 in combination with 100:1 Attenuator
– Set attenuator CH I to 5 V/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
16. CH II: Attenuator
16.1 CH II Input Capacitance Adaptation
– Press CH I/II pushbutton (IN position) to select channel II.
– Connect a 50 mV
pp
, 1 kHz square wave signal via a 2:1 pre-
attenuator (1M
Ω
with parallel C-trimmer) to input CH II.
– Check that DC input coupling is selected.
– Check that attenuator is set to 5 mV/div.
– Check that time base is set to 0.2 ms/div.
– Check for 5 divisions signal height at 5 mV/div. attenuator
setting.
– Adjust C-trimmer in 2:1 pre-attenuator for leading edge
without over- or undershoot and fl at square wave top.
– Do not change the C-trimmer settings until item 15 is fi nis-
hed.
16.1 CH II: 2:1 Attenuator
– Set attenuator CH II to 10 mV/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
16.2 CH II: 4:1 Attenuator
– Set attenuator CH II to 20 mV/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
16.3 CH II: 10:1 Attenuator
– Set attenuator CH II to 50 mV/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
16.4 CH II: 100:1 Attenuator
– Set attenuator CH II to 0.5 V/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
16.5 CH II: 10:1 in combination with 100:1 Attenuator
– Set attenuator CH II to 5 V/div.
– Increase the calibrator output voltage for 5 division signal
height.
– Check for leading edge without over- or undershoot and
fl at square wave top.
17. Y-Final Amplifi er
– Connect a 25 mV
pp
, 1 MHz square wave signal via a 50
Ω
cable and a 50
Ω
through-termination to input CH I.
– Check that CH I input coupling is set to DC.
– Set time base to 0.1 μs/div.
– Check for fast leading edge without over- or undershoot
and fl at square wave top.
– Press CH I/II pushbutton (IN position).
– Connect the 25 mV
pp
, 1 MHz square wave signal via a 50Ω
cable and a 50
Ω
through-termination to input CH II.
– Check that CH II input coupling is set to DC.
– Check for fast leading edge without over- or undershoot
and fl at square wave top.
18. CH I: 5 mV/div Y-Amplifi er Bandwidth
– Connect a 40 mV
pp
/ 50 kHz sine wave signal from a Constant
Amplitude Generator via a 50Ω through-termination to the
input of CH I.
– Adjust the generator amplitude for 8 div. display height on
the screen.
– Increase the generator frequency until the signal is display-
ed with 5.6 div. height (-3dB) and check that the generator
frequency is higher than 35 MHz.
19. CH II: 5 mV/div Y-Amplifi er Bandwidth
– Press CH I/II pushbutton (IN position).
– Connect a 8 mV
pp
/ 50 kHz sine wave signal from a Constant
Amplitude Generator via a 50Ω through-termination to the
input of CH II.
– Adjust the generator amplitude for 8 div. display height on
the screen.
– Increase the generator frequency until the signal is display-
ed with 5.6 div. height (-3dB) and check that the generator
frequency is higher than 35 MHz.
P e r f o r m a n c e C h e c k H M 3 0 3 - 6
