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SYNC OUT
MODEL 188
• e
•
(H I )
(LO)
FUNCTION GENERATOR
:t:dc
VOLTAGE
OR
(INITIALLY OFF)
Figure 2·1. Firs' Setup
Ampntude
is normally variable
output with
50 dB am p litude range
a
utilizing both outputs.
Step
Control
Dial
3
FREQUENCY
MULTIPLIER
4
AMPLITUDE
5
DC OFFSE T
6
AMPLITUDE
Function
7
Generator
DC Voltage
or
Source
FUNCTION
.
9
MODE
MAN UAl TRIGGER
10
2· 2
OSCILLOSCOPE
CH2
SOURCE
30 dB for each
available
over
by
PoaltlonlOpenltlon
ON
Rotate in
both directions.
to 2.0.
Press each switch sequentially;
return to
1 K.
x
Rotate ccw.
Rotate cwo Return to OFF.
Rotate cwo
Vary input dc voltage; then disc
nee t VCG IN Input.
JV, ru
, "y
Press
Gate (CONT depressed,
released).
TRIG/GATE
Press and hold.
Scans by ArtekMedia
simultaneous
desired:
6000 and 500
If
value of Rl48 from 4990 to
1 .
Change
2.
R149.
Remove
The result
is:
(500 source)
10V pop
(6000 source)
HI
LO 10V pop
is
Amplitude
over
variable
and fall time Is less
than
than 6000 may also be
R148 for other
impedances.
output
To
increase the range of the variable amplitude
value
trol In
modified' unit beyond 30
a
of R124
necessary. Waveform quality
as
relative to the standard unit is not guaranteed below
and above
30 dB
20 kHz.
-
Ob
10V square
wave
Return to CH
only.
1
Rotation ccw Increases frequency
Return
cw decreases frequency.
rotation
Frequency Increases
right.
Amplitude decreases.
Output immediately
positive. OFF return it to
Square
returns to original
decreases
Frequency
on-
increases
with negative
JV
ru ,
Observe
,
A dc level near zero volts
Continuous
"v .
2011
=>
output impedances
are
6040.
Into 500 .
6000.
into
Square wave
30 dB.
rise
substituted
150
Any value greater
ns.
for the value of
con
decrease the
dB,
rvatlon
..
on CHl and
lV on CH2.
±
of
in decade steps,
left to
offset
negative,
l
then moves
igi
level.
o
a
r
n
amplitude.
with positive voltage and
volta ge.
"v
waveforms.
(except
function).
'"L
,
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