Performance - BWD MINI-LAB 603B Manual

2
.
PERFORMANCE
:
Funcfion
Generafor
:
2.1
Waveform:
Sine,
triangle or
square, pulse and ramp with amplitude
or
frequency modulation.
2.2 Frequency range:
8
Decade
ranges calibrated from 0.01
Hz
to
1
MHz
plus
a
200kHz
to
2MHz
range.
An
additional uncalibrated section of the
dial
extends range
to
0.001 Hz.
Dial covers 2
decades on each
range.
Calibration:
±3%
of
full
scale
lOHz -
IMHz.
2.3 Voltage output:
Two
simultaneous
levels
10 Volts
p-p open
circuit, 5 Volts p-p
into
600Q.
1
Volt
p-p open
circuit,
0.5
Volts p-p
into
600Q.
Variable output provides continuous
control of >100:1
of
both
outputs whilst
maintaining a constant
600Q
output
impedance.
Outputs, overvoltage
and
short circuit
proof.
Sinewave
output
level
:
Less
than
±2%
level
variation over calibrated frequency
range into
600Q ±
5
%
between
1
and
2MHz.
2.4 Output
offset:
Output normally centered symmetrically about ground.
Push/pull
switch applies a continuously variable 0
to
±5
Volts
offset
voltage on
open
circuit.
Control also doubles
as
ramp frequency
control (see
2.8
below).
NOTE:
0-1
V
output has
±0.5V
offset.
2.5
Syr.in'.otry
(fixed):
±2%
from
O.OlHz
to
1
MHz
(calibrated portion of
dial).
Symmetry
(variable)
:
Pulse
or
ramp waveforms.
Continuously variable from
1:1 to
over
1:50 or 50:1
by
switch selection.
Applies
to sine, triangle
or
square
waveforms. Variable control also doubles
as
ramp amplitude
(see
2.8 below).
2.6
Sine
wave
distortion:
<1.5% lOHz
to
>50kHz <2%
at
IMHz
(typically
0.6% 20Hz
to
50kHz).
Square
wave
rise
time: lOOnsec into
600Q
load
and <50pf capacitance.
Triangle
linearity:
>99%
within calibrated range on
dial
up
to
lOOkHz.
Triangle
symmetry:
Better than
2%
within calibrated range up
to
lOOkHz.
2.7 Frequency modulation: Function
Generator can be swept over 2 decades by
the
internal
ramp generator
or
over 4 decades by an
external
log
sweep.
It
can
also
be
used
as
an
externally
programmed
oscillator
over
a
10,000/1 frequency
range.
Input:
1
Volt/dial division.
Input
impedance: 25KQ.
Linearity:
2%.
Input frequency:
DC
to
>10kHz.
2.8
Sweep ramp
generator:
Output voltage: 0
to
>+10
Volts
with a continuously adjustable upper
limit
from
+0.6
to
+10
Volts using the variable
symmetry
control
in
the
OFF mode.
Ramp
duration
:
>4
sec
to
65m sec approximately.
Continuously adjustable by the
OFFSET
control
in
the
OFF
position.
When
coupled
into the
FM
socket, the
Function Generator
will
sweep
from the
frequency
selected
by the
dial
up
to
the
frequency
set
by the
ramp amplitude
control.
An
automatic
circuit
prevents the
sweep exceeding
the dial
range.
Horizontal drive
to oscilloscope
or
recorder
is
also taken from
ramp output
via the
voltage amplifier (see 2.14)
to set
drive voltage and polarity required.
2 -
1
603b