Table of Contents
Advertisement
H 52005-301D
(7)
(9)
(11)
(10)
AF
MONITORED
MTENUATOR
Bol 20t
/s-
20ktfs
Unbal
DC
-
550ktfs
TPC91
Fig.
2 Controls and connectors on front panel of
monitored
attenuator
(1)
(2)
(5)
(6)
3.
The controls
and connectors on
the
front panel
of
the monitored
attenuator
(Fig.
2)
a
re as
follows
:-
(1)
INPUT
socket.
For
connecting apparatus to the monitored attenuator
(in
parallel
with the
oscillators connected at
the rear)
.
(2)
METER
RANGE
switch.
For
switching on
the
h.t.
supply and
selecting
the required
voltmeter sensitivity,
and also
for
checking the h.t. level.
(3)
METER.
For indicating the
input
level
according
to
the
setting
of
t
he METER RANGE
switch,
and also for checking the h.
t.
level.
(4)
10
dB
switch.
For setting the
attenuation
up to
100
dB
.
(5)
1
dB
switch.
For setting the attenuation up to
10
dB.
(6)
0.1 dB
switch.
For
setting
the attenuation up to
1 dB.
(7)
OUTPUT IMPEDANCE
switch.
For selecting
the appropriate output impedance,
balanced or
unbalanced.
(8)
WAD
switch.
For switching in
a
matched
internal
load across
the
attenua
tor
output.
(9)
UNBAlANCED terminals.
For connecting
apparatus
of
GOO
n
impedance unbalanced.
(10)
BALANCED terminals.
For connecting apparatus
of
600,
150
or
7
5
~
impedance
balanced
.
(11)
CENTRE TAP
terminal.
Nov.
79
For connecting the earth
of
balanced
apparatus
.
Chap
.
3
Page
3
Advertisement
Table of Contents
