Subject to change without notice
21
O p e r a t i o n a l c h e c k
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 50 Ω
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 5 V display. First depress one button
(–20 dB) only, then both buttons (–40 dB)
simultaneously. The DVM should display 0.5 V or
0.05 V ±2% respectively.
Adjustment range of the offset voltage
Setting: (6)
(4)
(3)
(12)
10k max max
Connect Oscilloscope to the output
. Use a 50 Ω
through-termination. Pushbutton is activated.
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 (±30 V 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
specified 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 0.4 V;
“High”: about 5 V). Without any function activated
the trigger output su5V.
