Operational check
Measuring equipment required
20Mkz Oscilloscope: HM 203 or HM204
HZ22 509 Through-Termination
HM 011s Digital Multimeter
or similar
Adjustable DC voltage source (max. 30 V) e.g. HM8040
HM8021 3 Frequency Counter
Frequency variation
The adjustment range of the VARIABLE knob @ mustin
any case overlap the selected decade on both sides by
min. 5%.
Amplitude stal
Setting:
®
©
a
M
ik
max
max
Connect oscilloscope to output @. Use a 502 through-
termination. Set oscilloscope to DC coupling. Adjust sig-
nal height to 6 div. Check all frequency ranges with ©
and (@). The signal height should not vary by more than
0.2Div.
Maximum output amplitude
Setting:
O
O
qa
©
ル
1k
max.
max.
released
Connect oscilloscope to output é. The signal amplitude
should be 20V,, < 500mV,,. With a 60Ω load at the out-
put @, the signal amplitude should still be ΤΟΝ,
250mV。。
Output attenuator function
Sting:
©
©
©
&
"100
50Hz
max.
released
Connect digital multimeter (Vac) to output 4). Set knob
@ for 5V display. Firstly depress one button 4@ (— 20dB)
only, then both buttons 49 (—40dB)
simultaneously.
The DVM
should display 0.5V or 0.05V +2%
respec-
tively,
Adjustment range of the offset voltage
Setting:
©
©
©
©
depressed
max
max
released
Connect DVM to the output é). Use a 5092 through-ter-
mination. The DC potential should vary between about
+2.5V and — 2.5V by use of control 62.
Signal without DC-offset
Signal with DC-offset
-10V —
+10V —
negative DC-offset
positive DC-offset
-10V
—
Freguency variation by FM input
Setting: © released (sweep off)
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 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 0.4V; "High":
about 5V).
Steckerleiste; Versorgungsspannungen
5V
δν
+=
+=
123456789
11 12 13 14 15 16
Multipoint Connector; Supply Voltages
16V
R401, R402: 1k62
ae
18 19 20 21 22
'Subject to change without notice
M5 — 80304