Protek B-810 User Manual

(14)
Counter
Selector
Switch
Press the switch ( A ) to external counter.
Press again ( 1 ) to internal counter.
(15) External Counter ¡Ñ
Counter
input
connector
for
the
external
signal
input.
(16) AM Switch (ON J. , OFF J. l ._
Press this switch ( .1 ) for amplitude modulation. The MOD IN terminal (17) Is used
to
input
modulation
signals.
(17) MOD IN Terminal
This is the input terminal for amplitude modulation. lt provides an input lmpedance
of about 10k ohms, a frequency range of DC to 1 MHz, and a maximum input voltage
of j: 10V (AC+DC)
(18) LOG l J. l/LIN ( Jn ) Switch
With the MODE switch (S) set to SWEEP, the LOG/LIN switch enables Iogarithmic sweep
or linear sweep to be selected.
(19) SWEEP ( 1 )/SET START l L ) Switch
This switch is used to set the sweep start frequency with the MODE (S) set to SWEEP.
When the switch is pressed ( ... ) for SET START, the sweep'is stopped at the sweep
start
frequency.
Then,
connect
the
generator
output
to
a
frequency
counter
or
oscillo-
scope,
and
specify
a
sweep
start
frequency
by
using
the
START
knob
After
the
frequency
IS
set,
the
sweep
can
be
resumed
by
setting
the
switch
to
SWEEP
(
J.
l
The sweep stop frequency' IS set by using the FREQ. dial.
(20) Start/MOD Level Control
This' IS used to set the sweep start frequency and to change the amplitude modulation
level.
(21) Time 01- lOs( l. 100ms(.l )Switch
This switch IS used to switch the time ranges for burst gate or sweep when the MODE
switch (5) IS set to BURST or SWEEP.
(22) AM Carrier Level Control
This IS used to adjust carrier levels for amplitude modulation. With a setting around
carrier waves are suppressed and a double sideband (DSB) Is obtained.
(23)
Symmetry
(Pull-0n)NariabIe
Variable
(outer
knob):
This is used to adjust the burst/sweep time contínuously in the range selected by
the TIME switch Turning the VARIABLE counterclockwise decreases the
time.
Symmetry
(pull-on)
(inner
knob):
Pull out to adjust the ON/OFF time for a burst and sweep time (both ways). When
this
knob
is
pushed
in,
the
time
ratio
is
50:50.
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Protek B-810 Specifications

General

Brand	Protek
Model	B-810
Category	Measuring Instruments
Language	English