General Description; The Model 188; Specifications; Versatility - Wavetek 188 Instruction Manual

THE
1.1 MODEL 188
The Model 188,
Wavetek
Generator, is precision source of sine, tr
a
from 4
square waveforms plus dc voltage.
front panel
variable
or
internally externally modulated.
variable or logarithmically within
linearly
used sweep
as a
range. When
provides
ramp generator
1
1000: (linear) frequency
frequency range
(logarithmic)
the
tinuous or generator can
front
an external signal or a
of the 500 Is
waveforms variable
down to 1S mV peak-t o-pe ak. DC
to
be
th e waveform can offset positively
The two selectable waveform outputs are a 20V
(20
to-peak and a Vp-p):
maximum
dB down from 20 e
30 dB a . Auxiliar y outputs
n
r g
6000 sweep ramp and a 6000 generator control
frequency.
o level is proportional
v l t a ge signal whose
generator
1.2

SPECIFICATIONS

1.2.1

Versatility

'\; "v
Waveforms
s
Sine triangle
I ,
and dc .
Operational Modes
Generator
Continuous: runs
frequency.
Generator
is quiescent until triggered by
Triggered:
externa l signal or manual trigger,
complete waveform cycle
Gated: As
triggered mode,
duration of
for gate signal.
completed.
Scans by Artekmedia
Sweep/Function
MHz
4
a g e and
n
i l
waveforms are
All
mHz 4 MHz and be
to can
Frequencies
are
frequency
a
generator, an internal
over
a
a
recurring s.weep
range 10,000:
or 1
can be con­
Output
panel be . or
triggered gated by
switch. Amplitude
form 10V in­
peak-to-peak
f nc of
r e r e e
e
or
negatively.
peak­
peak-to-peak
2V maximum
both level
a
may be varied over
a TIL s y nc,
a
are
main
to the
�
q ,TIL
uare
pulse
-"­
continuously a
t selected
then one
generates
at selected
frequency.
waveform continues
except output
Last started is
2011
=>

GENERAL DESCRIPTION

Sweep: An internal ramp
from
main
generator a lo
higher stop frequency,
(4 decades).
logarithmically
Sweep
Stop: Frequenc y
switches
Used to set high frequency
Fre q uency Range
c
0.004 Hz (0.0004
Hz
linear
de de
a
ping ranges:
Xl
. .
xl0 .
. . . . . . . . . . . . . . . .
1 K .
100 .
x
. . . . . . . . . . . . . .
. . . .
X . . . . . . . . .
. . . . . . . . . . . . . . . .
10K .
x
. . . . . . . . . . .
100K .
x
. . .
. .
1 M .
x
. . . . . . . . . . . .
. . . . . . . . . . . . . .
Function Output '\; , '1.J
(10 Vp-p 500)
, "v
selectable
into HI output, and to 2
SOO) LO output. Both
outputs varied
Peak is 1
nier. output current
put) into 500 (200 mA peak into
500.
impedance is
DC Offset and DC Output
and dc outpu t selectable
Waveform offset
through HI
and LO BNC outputs.
(± 500)
not a waveform function. HI output is
by selecting
10V max 5V
±
into
500). plus offset limited to V
Signal-peak
LO output is ± 1
max
offset
signal-peak plus limit.
attenuated
proportionately at
TTL Sync Output
to 20
TIL (50% duty cycle)
pulse
up TIL loads.
Drives
-
OCV Generator Control Voltage
o to 4.0V output
open circuit
Proportional
pedance.
horizontal
For use as a
generator.
1
SECTION
,
sweep the
generator will
w
start to
e r
frequency
linearly (3 decades) or
to high sweep
limit.
limit
log) to
4
MHz In 7 overlap­
(0.0004)
0.004 to 4 Hz
. (0.04)
0.04 (0.004) to 40 Hz
. . . .
(0.4)
0.4 to 400 Hz
. . . . . .
. .
. 4 (4) to 4 kHz
. . . . .
. . . . . . . . . .
40 (40) to 400 40 kHz
. . .
to kHz
. . . . .
400
(0.4)kHz to 4 MHz
4
. . . . . .
.
. . . . .
Vp-p
Vp-p (1 Vp-p
and iab to 20
r
v a l e
a 30 into
0 with dB
ver­
rnA
0 maximum (HI out­
short circuit).
a Source
and variable
DC
output selectable
offset 10V (± Vdc
as or
ou t pu t .
500) 5V into
±
(± 0.5V into'
as
is
(
DC offset waveform
plus
LO - 20 dB) output.
at frequency.
generator
6000
from source im­
of main
to frequency
drive signal.
'- 1
a