User manual

Subject to change without notice
21
Operational check
Maximum output amplitude
Setting: (6) (4) (3) (12) (11)
1k max max released
Connect oscilloscope to output
. The signal
amplitude should be 20V
pp
±500mV
pp
, With a 50Ω
load at the output
, the signal amplitude should
be 10 V
pp
±250 mV
pp
.
Output attenuator function
Setting: (6) (4) (3) (12) (11)
~ 100 50Hz max released
Connect digital multimeter (V
AC
) to output . Set
knob for 5V display. First depress one button
(–20dB) only, then both buttons (–40dB)
simultaneously. The DVM should display 0.5V or
0.05V ±2% respectively.
Adjustment range of the offset voltage
Setting: (6) (4) (3) (12)
10k max max
Connect Oscilloscope to the output
. Use a 50Ω
through-termination. Pushbutton is activa-ted.
Adjust signal height to 6 div. Turning OFFSET
control
to the left the output signal should
be shifted up to the top of the graticule. Turning
the control
to the right the signal should be
shifted to the bottom of the graticule. The DC
potential should vary between about +2.5V and
-2.5 V by use of control .
Frequency variation by FM input
Apply an adjustable DC voltage (±30V max.) to
the FM input. Display indication
will vary as a
function of the applied DC voltage. The obtained
results can be examined by use of the formulas
specifi ed in the FM input section of the operating
instructions.
Trigger signal waveform
Connect the oscilloscope to output
. A square
wave signal with TTL level and a 50% duty factor
will be shown on the screen (“Low”: about 0.4V;
“High”: about 5V). Without any function activated
the trigger output supplies +5V.