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®
model 5445 quad digital modulator
pll frequency control
D
C
BA
program
select
®
model 5445 quad digital modulator
pll frequency control
D
C
BA
program
select
To program modulator to channelC 120
To program modulator to channelB67
Press button
times
program
6
Press button
time
program
1
Press button
more times
program
7
Press button
more times
program
2
Press button
more times
(press 10 to enter a ‘zero’)
program
10
Wait for channel LED to light
(ready for next number.)
B
Wait for channel LED to light
(ready for next number.)
C
Wait for channel LED to light
(ready for next number.)
C
Programming Examples:
Press button until
channel LED is on
select
B
Press button until
channel LED is on
select
C
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
4
If an error has occurred or an incorrect channel is
entered, the LED will flash quickly for a second and
return tothe previoussettings.
If two adjacent channels are selected, the unit will
accept the entry but will blink the LEDs of channels
that are too close. If this happens, re-program one
of thechannels tomove itawayfrom theother.
®
model 5445 quad digital modulator
pll frequency control
D
C
BA
program
select
To readback modulator C channel assignment
(example: C has been programmed to channel )108
Hold button down
for 5 seconds, then release.
program
Led blinks time and pauses1
Led blinks times8
Led blinks times, pauses
(“10” is read back as 0)
10
Press button until
channel LED is on
select
C
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
select program
ABCD
Valid Channels:
Channel Spacing:
Error indication:
Channel number
readback:
14-64: UHF channels
65-125: CATV channels
95-99: not valid
Skip at least one number between channels.
Channels 14 and 16: OK.
Channels 14 and 15: Illegal.
A readback mode will display the current channel
assignments.
5