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1 . 1
THE MODEL 182A
Wavetek Model 182A Four M Hz Function Generator is
a precision source of sine, triangle and square wave
forms plus de voltage. All are front panel variable from
0.004 Hz to 4 MHz and can be externally modulated or
swept over a 1000:1 range. Output can be continuous
or the generator can be triggered or gated by an exter
nal signal or a front panel switch. Amplitude of the
waveforms is variable from 10V peak-to-peak into 500
down to 30 mV p-p. DC reference of the waveforms
can be offset positively or negatively.
The main waveform output is 20V peak-to-peak maxi
mum and can be varied over a 30 dB range. A second
waveform at 2V peak-to-peak maximum (20 dB at
tenuation) and a TIL level square at generator fre
quency are auxiliary outputs. Inputs are provided for
external voltage controlled generator frequency (VCG)
and for triggering and gating the generator.
1 .2
SPECIFICATIONS
1 .2.1
Versatility
Waveforms
Sine
r-v
,triangle
"v
, square
and dc.
Operational Modes
Continuous: Generator runs continuously at selected
frequency.
Triggered: Generator is quiescent until triggered by
external signal or manual trigger, then generates one
complete waveform cycle at selected frequency.
Gated: As triggered mode, except output continues
for duration of gate signal. Last waveform started is
completed.
Frequency Range
0.004 Hz to 4 MHz in
7
overlapping decade ranges:
X1
X 10 .
X 100
x 1K
.
.
x 10K ..
x 100K
x 1M
Function Output
(1 OV p-p into 500) H I output, and to 2V p-p (1 V p-p into
500) LO output. Both outputs varied with a 30 dB ver
nier. Peak output current is 100 mA maximum (H I out
put) into 500 (200 mA peak into a short circuit). Source
impedance is 500.
DC Offset and DC Output
Waveform offset and dc output selectable and variable
thru HI and LO BN C outputs. DC output selectable by
not selecting a waveform function. HI output is
max (± 5V into 500) as offset or Vdc output. Signal
peak plus offset limited to
output is ± 1 V max ( ± 0.5V into 500) as is signal-peak
plus offset limit. DC offset plus waveform attenuated
proportionately at LO ( - 20 dB) output.
TTL Pulse Output
TIL pulse (50% duty cycle) at generator frequency.
Drives up to 20 TIL loads.
VCG - Voltage Controlled Generator
Up to 1000:1 frequency change with external 0 to
maximum and minimum of selected range.
I'l
f'1
, TIL pulse
Slew Rate: 2% of range per ,.,.s.
Linearity:
Input Impedance: 2 kO.
Trigger and Gate
Input: TIL compatible levels.
Pulse Width: 50 ns minimum.
Repetition Rate: 4 MHz maximum.
1 .2.2
Dial Accuracy
±
Time Symmetry
Square wave variation from 0.2 to 4.0 on dial less than:
±
0.004 Hz to 4 Hz
. 0.04 Hz to 40 Hz
0.4 Hz to 400 Hz
1.2.3
. .. 4 Hz to 4 kHz
. .... 40 Hz to 40 kHz
Sine variation with frequency less than:
. 400 Hz to 400 kHz
±
. . ... 4 kHz to 4 MHz
4 MHz.
SECTION
GENERAL DESCRIPTION
r-v
,
"v
f'1
selectable and variable to 20V p-p
,
10V (± 5V into 500). LO
±
±
4V signal. Upper and lower frequencies limited to
±
0.5% thru x 100K range;
Frequency Precision
5% of full scale.
1 % to 100 kHz; ± 5% to 4 MHz .
Amplitude Precision
0.2 dB on all ranges through
1
±
10V
±
2% on X 1 M range.
x
100K;
±
1.0 dB to
1-1
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