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1.
GENERAL
1.01 This
manual
provides
the
physical
and
functional
description
and
operating
theory
necessary
for
effective
use
of
the
Telewave,
Inc.,
Model
44
Broad
Band
Radio
Frequency
(RF)
Watt Meter. Figure 1-1 illustrates
the
Model
44
RF
Watt Meter.
Its
features
include:
• Does
not
require
inserts,
• Does
not
require
bandswitching,
• Displays five
power
ranges,
• Meas1ues 1
to
500
Watts,
• Provides 5 Watts full scale,
•
Frequency
range
is
20
to
1000
MH
z,
• Measures
incident
and
reflected
power,
•
Optionally
available
with
type
Nor
UHF
connectors,
• Lightweight, rugged
and
easy
to
carry.
1.02
The
instrument
integrates
two
broad-band
directional
couplers
for
measuring i
ncident
and
reflected
power,
detectors,
ranging,
calibration
and
display. This wi
de
band
and
dynamic
range
instrument
does
not
require
inserts
or
band
switching.
1.03 A
20
µA
taut
band
meter
movement
is used
to
display
l,he
measured
power
providing
the
measurement
accuracy
necessary
to
tune
low
power
portable
transmitters.
1.04
The
user
is
provided
with
a
convenient,
easy
to
read,
vo
ltage
standing
wave
ratio
(VSWR)
chart
on
the
rear
of
the
instrument
for
determining
VSWR from
the
measured
incident
and
reflected
powe
r levels.
1
.05
A die-cast
metal
case
houses
the
instrument
for
rugged
field use.
The
Model
44
is ideally
suited
for
mobile,
marine
and
aircraft
applications
as well as
base
stations.
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