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Overall D
i
mensions
==
Rack
Model
:
10-5
/8
11
h
i
gh
x
19
11
wide
x
14
-
1 /2
11
deep
.
Panel
size
:
1
0
-5/8" x
19
11
Depth behind panel
:
14
11
Cabinet Model
:
12-1/2
11
high
x 2
0-
3/4
11
wide x 14-1/2"
deep
.
Rack
Model
:
29 pounds.
Cabinet Model
:
36
pound
s.
Oper
ati
ng
Instructions
Insp ec
ti
on
- -
This
instrument
was
th oroughly
tested
and i
nspected before
be
i
ng
shipped
. and
is
ready for
use
when receive
d
.
After
the instrume
n
t is
unpacked,
it
should
be
inspecte
d carefully for
damage r
eceived in
transit.
If any ship
p
i
ng dam
age
is
found, follow
the pro
=
cedur
e
ou
tlined in
the
11
Claim
for D
ama
ge
in Shi
pment" page at the back of
this instruction book.
Controls
and T ermin
als (Fig. 1)
--
RANGE
-
This
four
-
position rotary switch c
onn
ects the
proper
multi
-
plier
resistors
int
o
the circuit
for the
des
ire
d
range
.
Each
position of the
switch
carries a
db designation
an
d
a perc
e
n
t
d
esi
gnation
.
a
.
Fo
r t
he PERCENT
REFLECTION
(RE
FLECTOMETER) scale, the
numerical designation
of the
switch position indicates the
full
scale
indication in percent of
the
range
in
use
.
b.
Fo
r the SWR (S
LOTTED
LINE
)
scale.
the full scale indication
of
the
range
in
use is the
reciprocal of
t
h
e
percent
designation of the
switch
po
sition.
(Se
e
Applications section
before using
the
SWR
scale.)
c.
Fo
r the DB
scale.
the d
ecibe
l d
esignatio
n of
the switch
position indi-
cates
the
value in
db to be
a
dded to the
minus
value
of the meter
read
-
ing in db (full scale, the meter
indic
ates
0
to
-1
0 db)
.
For
example, if
the
meter
reads
11
5
11
o
n the
DB scale
,
and
the
RANGE switch is at
-
20
D
B 10%, the meter is
ind icating
a
level of
-2
5
db
T('~2
0)
+
(
-
5)
J
SET
TO
FULL SCALE -
T
h
is c on
tro
l
(variable resistor R32 in the Re
-
flected/Probe
chan
n
el
) is
used
in
th
e calibration
of the sys
t
em (reflectometer
or
slotted
line) to
adjust the meter reading, usually
for
full
-
scale
indication on
the
chosen
range.
RF
POWER
MONITOR
- T
h
is e
l ectron
ray
ind
icator (V9)
monitors (to a
fir
st
ap
proximation) the sum
of
the
incident
a
nd
re
flected
input
powers.
ON
-
Thi
s
toggle
switch
control
s the
power
supplied to
the instrument
'l-3
1
'
\
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