Marconi Instruments 2955 - Page 29

OPERATION
TRANSMITTER
TESTING
AF
GENERATOR
X)(M)©©(r
MAMCONI
tMSTRUIVtENTS
f?
T*
«ea
i
POWCRt
0^e«n^
op_.rTO
iiL:«- .
LeuCLi
V.OliKMx
CrlSIlNw*
«x
,:j|.
lis.itewt
.
voLM
|
I
f
O
Q
gjg
:Q
O
j
j
i
{
i
T.
|i
ys'
l-Uj
I
I-
[
-.1^'
m
e
[15)
(lO
(13)
(12
Fi^. 3-3
AF
generator
controls
and
connectors
0
TX
key.
Connecis
the
.\F
generator
to the
AF
GEN OUTPUT
socket
0.
Writes
on
the
screen
information
concerning
instrument
settina.
0
MODE
keys.
Used
as
soft
keys
to
select
programmed
functions when menus
are
shown
alongside
on
the
screen.
AF
GEN
key.
Enables
the
internal
AF
generator.
0
A
INCH
key.
Follows
a
FREQ
(0
or
LEVEL
(T)
entry'
so
that the entered data
is
recognized
as
an
increment
or decre
msenL
0
FREQ
key.
Precedes
a
keypad
(0
entry
so
that
the
entered data
is
recognized
as a
frequency.
0
LEVEL
key.
Precedes
a
keypad
0
entry
so
that
the entered
data is
recognized
as
a
level.
(0
DATA
keypad.
For
data
entry
using
numerals
0
to
9.
decimal
point and minus sign.
(0
FREQ/LEVEL
keys.
For
defining
units
of
frequency
or
level. One
of
these
termi-
nates
the
data
entry.
.
46a8l~622N
Apr.
88