Wavetek 142 - Page 8

SYNC OUTPUT
Amplitude greater than 4 V
p-p
into open circuit;
2
V
p-p
into
50 ohms. Square waveform for symmetrical outputs;
rectangular
waveform for pulse and ramp outputs. Sync
pulse polarity is opposite that of
output square wave.
DC OFFSET
Can
be controlled manually
using
the front panel control,
or electronically by applying an external voltage. Adjust-
able range
is
±10
Vdc into open circuit
(±5
Vdc into
50-ohm load) with peak output, at the output, limited
to
±15
Vdc
into
open
circuit
(±7.5
Vdc into
50Q).
External
offset
sensitivity
is approximately
—0.4
V/V with output
connected
to
50-ohm
load. DC offset and
output waveform
are attenuated
proportionately by the 60 dB output
attenuator.
1.3.2
Horizontal Precision
FREQUENCY ACCURACY (Dial Accuracy) Symmetrical
Waveforms
0.01
Hz
to
1
MHz ±(1%
of
setting
+
1%
of full scale).
1
MHz to 10 MHz
±(2%
of setting
+
2
%
of full
scale).
VERNIER
Permits frequency adjustment
of
approximately 1% of
range.
TIME SYMMETRY
10
Hz
to
100
kHz
±0.5%
0.01
Hz
to 500
kHz
±1.0%
1.3.3
Voltage-Controlled Generator
VCG
CONTROL RANGE
Up to
1000:1
frequency change with external voltage
input.
Upper frequency
is
limited
to maximum of selected
range. Required external signal for full voltage
control is
5
volts with
input impedance of
5
kf2.
VCG INPUT
FREQUENCY
VCG Bandwidth
100
kHz
VCG Slew Rate
2%
of range/microsecond
VCG LINEARITY
10
Hz
to 100 kHz ±0.2% of full scale
0.001
Hz
to
1 MHz ±0,5%
of
full
scale
1.3.4
Vertical
Precision
SINE
WAVE FREQUENCY
RESPONSE
Amplitude
change with frequency less than:
0.1 dB
to 100
kHz
0.2
dB
to 1
MHz
2,0
dB
to 10
MHz
STEP
ATTENUATOR
ACCURACY
±0.25dB/10dB
STABILITY
Short
term
±0.05%
for
10 minutes
Long term ±0.25% for 24 hours
Percentages
apply
to amplitude, frequency, and dc offset.
AMPLITUDE
SYMMETRY
All waveforms (except pulse) are symmetrical
about ground
within
±1% of maximum peak-to-peak
amplitude.
1.3.5 Purity
SINE WAVE
DISTORTION
10
Hz
to 100
kHz
. .
.less than
0.5%
(typically
0.25%)
100
kHz
to 1
MHz
less than 1.0%
1 MHz to 10 MHz
. .
all harmonics
at
least
30 dB
down
TRIANGLE LINEARITY
0.002 Hz to 100 kHz
.
greater than
99% by using the
best
straight
line method
SQUARE WAVE RISE AND FALL
TIME (terminated in
50Q load)
Less than
20 nanoseconds; limited
to 500 V/microsecond.
TOTAL ABERRATIONS
Less than
5%
1.3.6
Environmental
TEMPERATURE
All specifications
listed,
except for stability,
are
for
25°C ±5°C.
For
operation from 0°C to 55°C, derate all
specifications
by a
factor of 2.
1-2
8/73