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'C''2unn
I
Mon I
:J
I.
I
Ll
U MHZ
,.--
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•
•
1111
1111
~
II II
+,3
-
'-1
c 0
,j
, KHz
~
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KH.t
)
FIGURE 3-2- CLOSE-UP
OF
LCD'S AND
MEMBRANE
K
EY
BOARD
3.4.0 PR
OG
RAMMl
NG
SE
QUENCE
The
unit
ha
s
three
program
keys, B
I
~=
I
and
I
~
I
Depressing any key will initiate
the
user programming
states
as
detailed below.
The
left
and
right vertical cur-
so
rs for
LCD
measurement displays
and
the
vertical
cursor
in
the
modulation
section
will
not
respond
whenever the unit
is
in a
data
entry state.
When
in any
programming
se
quence
,
only
numeric
digits
0-9,
I("'"
I
EJ
and left
and
right cursors respond.
3.4.1
GENERA
TO
R AND MONI
TOR
FR
EQUENCY
The
se
rvi
ce monitor has the capability
of
storing a
separate frequency for monitor
and
generate. To pro-
gram the monitor frequency, set the function switch to
"Pwr
Mon"
or
"Sens
Mon"
("Anlzr Pwr Mon"
or
"A
nlzr
Sens
Mon"
can also be used on the R-2400).
To
enter an RF frequency press the B
program
key.
Immediately the first digit
on
the left L
CD
will blink
indicating the point
of
entry. Next
enter
the desired fre-
quency. Resolution is specified at
100Hz
on frequencies
to
999.9999
MHz
meaning seven decimal digits
are
valid
entries. As the
7 digits
are
entered using the keys 0
through
9,
the blinking cursor moves to the right auto-
matically but may also be manually moved using the
I
[>
I
right
or
I
<l
l left cursors.
To
clear the entire entry, press
I
R-•
1,
if
the
lA
...
•]
key
is
immediately depressed a second
time, the original number stored in memory is displayed
and
the programming sequence is terminated. Pressing
I
1
"'"]
loads the frequency
and
also leaves the frequency
programming mode.
For example
if
a frequency 195.050 MHz
is
present in
the left LCD display,
an
RF
monitor
frequency 455.321
MHz
can be entered
into
the
non
volatile memory as:
Pr
ess
Pr
ess
Numeric
Pr
ogram
K
ey
Key Display Comme
nt
B
190.050
4
490.050
5
45
0.050
6
456.060
@)
45
6.060 Manua
ll
y Correct Entry
5
455.060
321
455.321 Complete
Entry
EJ
455.321
NOTE:
Shaded area indicates flashing <ligit. (point
of
data
entry)
The
monitor
RF
frequency is now stored.
The
same se-
quence is used to
program
the generator RF frequency,
except the function switch should
be
set
to the
"Gen"
or
"Hi Gen" position.
3-3
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