2. when using one modulator only, insert the power plug of the modulator to a power supply socket directly. when using more than one modulator, please insert the first modulator\'s power plug into the next modulator\'s power socket, and so on. remember to insert the last modulator’s power plug into a power supply socket
3. connect the rf output on the rear panel to the channel mixer of the catv head-end equipment.
4. power on the unit for 10 minutes before apply any operation.
5. adjustkey (7)on rear panel to change output level to make the output levels of differentmodulators almost equal
6. adjust the frequency deviation and video modulation depth to obtain best sound and picture.
7. the a/v has been preset before sold. do not attempt to adjust the "a/v" in case of unnecessary.
features
1. if processing with muc techique, high precision
2. led for channel display
3. 4 channels in 1 unit, each channel from 45-550mhz valiable.
4. reliable switching mode power supply, high stable.
5. adopt mmic circuit and surface-mounted technique on key parts
specifications
items
unit specifications
frequencyrange
mhz
47-550mhz
frequency precision
khz
±0.5
output level
dbmv
45
spurious output suppression
dbc
60 max.
video input level
vp-p
0.6~1.5
video input impedance
w
75
c/l delay
40nsec
flatness
db
±1
audio input level
db
-10~10dbm
audio input impedance
w
75
distortion
%
1
video s/n
db
-55
differential gain
%
<5%
differential phase
°
<5°
input voltage
v
100~260
dimension
mm
440*130*44
net weight
kg
2 max.
working temperature
0c
0~45
'
深圳市华视数码科技有限公司
李俊
18688706870
中国 深圳