| |
|
| |
|
| |
|
 |
FEATURES : |
| |
- Applicable for
47~870MHz system, fixed channel outputting, specially
designed for large-scale system
- Man-machine dialog
function
- Video frequency AGC
function
- RS485 net-
administration function
- LCD display: Radio
Frequency, Video/Audio medium frequency, Video frequency
modulating scale, Audio frequency modulating deviation, RF
output level, A/V ratio, etc
- I2 C Bus control
- Audio noise
reduction (optional)
- Clamping and
non-clamping switch, easy for Video frequency Scramble
- ntermediate
frequency modulating Video/Audio medium frequency signal
input, output port can be applied for interference loading
for fee-paid TV System
- In accordance t
adjacent frequency design, no interference between adjacent
chancel
- Having RF automatic
amplitude-stabilizing circuit, making front-end system
becoming more stable and reliable
- Adopting unique
diode dual- balance modulating, good linearity, low noise,
modulator’s indexes, such as S/N, C/N, DG,DP have achieved
internationally advanced level
- Surface mount
technology, ensuring the accordance of entire machine
- 19”1 U standard structure, independent
power supply, elegant exterior, flexible corollary equipment
|
|
Specification : |
|
|
RF |
Frequency
range |
47~870MHz Specified
Channel |
|
TV system |
PAL D/K |
|
Intermediate
Frequency |
38MHz |
|
Output returns loss
|
=15dB(VHF) =
12dB(UHF) |
|
output levels |
=120dB µ V
(Typical) |
|
Output level adjustable
range |
0~16 dB(0.5dB
step) |
|
Audio carrier power to video
carrier power ration |
-8~.22 dB(0.5dB
Step) |
|
Total frequency
deviation |
= 5KHz |
|
Error of video/audio carrier
interval |
= ±0.5KHz |
|
Carrier noise ration
(C/N) |
=
62dB(fe±4MHz) |
| =68dB(fe
±8MHz) |
| =75dB(fe
±16MHz) |
|
Output
suppression |
=68dB |
|
Interface |
FL10 |
|
Video |
Degree of modulation
signal |
=87.5% |
|
Flatness in operating
band |
= ±0.75dB |
|
Gain of differential
coefficient |
=2% |
|
Phase of differential
coefficient |
=2’ |
|
K-2T Factor |
=3% |
|
Delay difference of color or
light |
=30ms |
|
Signal to noise
ration |
=56dB(unweighted) |
|
=62dB(Weighted) |
|
Audio |
Pre-emphasis of
audio |
50 µ s |
|
Maximum partial frequency of
audio |
±50KHz |
|
Audio flatness |
=±0.5
dB(40Hz~15KHz) |
|
Distortion degree of
audio |
=1% |
|
Signal to noise
ratio |
=65dB |
|
Commu-nication
Interface |
Interface |
RJ45 |
|
Communication
Format |
RS485 |
|
Data Rate |
9600bits/s |
|
Miscell-aneous |
Dimension |
44mm×
482mm×360mm |
|
Power |
AC220V ±10% 50Hz
20VA | |
| |
| »
DSM2500B Adjacent Frequency Agile Modulator |
| |
|
| |
|
| |
|
|
FEATURES : |
| |
- Applicable for
47~870MHz system, Agile channel outputting, specially
designed for large-scale system
- Man-machine dialog
function
- Video frequency AGC
function
- RS485 net-
administration function
- LCD display: Radio
Frequency, Video/Audio medium frequency, Video frequency
modulating scale, Audio frequency modulating deviation, RF
output level, A/V ratio, etc
- I2 C Bus control
- Audio noise
reduction (optional)
- Clamping and
non-clamping switch, easy for Video frequency Scramble
- intermediate
frequency modulating Video/Audio medium frequency signal
input, output port can be applied for interference loading
for fee-paid TV System
- In accordance t
adjacent frequency design, no interference between adjacent
chancel
- Having RF automatic
amplitude-stabilizing circuit, making front-end system
becoming more stable and reliable
- Adopting unique
diode dual- balance modulating, good linearity, low noise,
modulator’s indexes, such as S/N, C/N, DG,DP have achieved
internationally advanced level
- Surface mount
technology, ensuring the accordance of entire machine
|
|
Specification : |
|
|
RF |
Frequency
range |
47~870MHz Any
Channel |
|
TV system |
PAL D/K |
|
Intermediate
Frequency |
38MHz |
|
Output returns loss
|
=15dB(VHF) =
12dB(UHF) |
|
output levels |
=120dB µ V
(Typical) |
|
Output level adjustable
range |
0~16 dB(0.5dB
step) |
|
Audio carrier power to video
carrier power ration |
-8~ -22 dB(0.5dB
Step) |
|
Total frequency
deviation |
= 5KHz |
|
Error of video/audio carrier
interval |
= ±0.5KHz |
|
Carrier noise ration
(C/N) |
= 62dB |
|
Output
suppression |
=60dB |
|
Interface |
FL10 |
|
Video |
Degree of modulation
signal |
=87.5% |
|
Flatness in operating
band |
= ±0.75dB |
|
Gain of differential
coefficient |
=2% |
|
Phase of differential
coefficient |
=2’ |
|
K-2T Factor |
=3% |
|
Delay difference of color or
light |
=30ms |
|
Signal to noise
ration |
=56dB(unweighted) |
|
=62dB(Weighted) |
|
Audio |
Pre-emphasis of
audio |
50 µ s |
|
Maximum partial frequency of
audio |
±50KHz |
|
Audio flatness |
=±0.5
dB(40Hz~15KHz) |
|
Distortion degree of
audio |
=1% |
|
Signal to noise
ratio |
=65dB |
|
Commu-nication
Interface |
Interface |
RJ45 |
|
Communication
Format |
RS485 |
|
Data Rate |
9600bits/s |
|
Miscell-aneous |
Dimension |
44mm×
482mm×360mm |
|
Power |
AC220V ±10% 50Hz
20VA | |
| |
|
| |
|
| |
|
|
|
| |
|
| |
|
| |
|
|
FEATURES : |
| |
- Applicable for 47~870MHz system,
fixed channel outputting, specially designed for large-scale
system
- Medium frequency modulating
Video/Audio medium frequency signal input, output port can
be applied for Scramble loading for fee-paid TV System
- In accordance to adjacent frequency
design, no interference between adjacent chancel
- Oscillator using unique phase-lock
(PLL) circuit make phase noise extremely low, and video
clear and stable.In accordance to adjacent frequency design,
no interference between adjacent chancel
- LED display of output channel.
- Surface mount technology, ensuring
the accordance of entire machine
- 9”1 U standard structure,
independent power supply, elegant exterior, flexible
corollary equipment
|
|
Specification : |
|
|
RF |
Frequency
range |
47~870MHz Specified
Channel |
|
TV system |
PAL D/K |
|
Intermediate
Frequency |
38MHz |
|
Output returns loss
|
=14dB(VHF) =
12dB(UHF) |
|
Output levels |
=115dB µ V |
|
Output level adjustable
range |
0~15 dB |
|
Audio carrier power to video
carrier power ration |
-14~.22 dB |
|
Total frequency
deviation |
= 5KHz |
|
Error of video/audio carrier
interval |
= ±2KHz |
|
Carrier noise
ration(C/N) |
=
60dB(fc±4MHz) |
| =65dB(fc
±8MHz) |
| =70dB(fc
±16MHz) |
|
Output
suppression |
=62dB |
|
Interface |
FL10 |
|
Video |
Degree of modulation
signal |
=85% |
|
Flatness in operating
band |
= ±1.5dB |
|
Gain of differential
coefficient |
=5% |
|
Phase of differential
coefficient |
=5’ |
|
K-2T Factor |
=3% |
|
Delay difference of color or
light |
=45ms |
|
Signal to noise
ration |
=54dB(unweighted) |
|
=60dB(Weighted) |
|
Audio |
Pre-emphasis of
audio |
50 µ s |
|
Maximum partial frequency of
audio |
±50KHz |
|
Audio flatness |
=±1
dB(40Hz~15KHz) |
|
Distortion degree of
audio |
=1% |
|
Signal to noise
ratio |
=60dB |
|
Miscell-aneous |
Dimension |
44mm×
482mm×155mm |
|
Power |
AC220V ±10% 50Hz
12VA | |
| |
| » MCBS
Splitter |
| |
|
|
CS201
Two-way Splitter : |
| |
|
| |
| Frequency
Range(MHz) |
Insertion
Loss(dB) |
Isolation(dB)
|
Return Loss(dB)
|
| 5-10 |
=5.7 |
=22 |
=16 |
| 10-50 |
=5.5 |
=25 |
=18 |
| 50-750 |
=6.2 |
=25 |
=18 |
| 750-1000 |
=6.5 |
=22 |
=16 | |
| |
|
|
CS301
Three-way Splitter : |
| |
|
| |
| Frequency
Range(MHz) |
Insertion
Loss(dB) |
Isolation(dB)
|
Return Loss(dB)
|
| 5-10 |
=5.7 |
=22 |
=16 |
| 10-50 |
=5.5 |
=25 |
=18 |
| 50-750 |
=6.2 |
=25 |
=18 |
| 750-1000 |
=6.5 |
=22 |
=16 | |
| |
|
|
CS401
Four-way Splitter : |
| |
|
| |
| Frequency
Range(MHz) |
Insertion
Loss(dB) |
Isolation(dB)
|
Return Loss(dB)
|
| 5-10 |
=5.7 |
=22 |
=16 |
| 10-50 |
=5.5 |
=25 |
=18 |
| 50-750 |
=6.2 |
=25 |
=18 |
| 750-1000 |
=6.5 |
=22 |
=16 | |
| |
|
|
CS601
Six-way Splitter : |
| |
|
| |
| Frequency
Range(MHz) |
Insertion
Loss(dB) |
Isolation(dB)
|
Return Loss(dB)
|
| 5-10 |
=5.7 |
=22 |
=16 |
| 10-50 |
=5.5 |
=25 |
=18 |
| 50-750 |
=6.2 |
=25 |
=18 |
| 750-1000 |
=6.5 |
=22 |
=16 | |
| |
|
|
CS801 Eight-way Splitter
: |
| |
|
| |
| Frequency
Range(MHz) |
Insertion
Loss(dB) |
Isolation(dB)
|
Return Loss(dB)
|
| 5-10 |
=5.7 |
=22 |
=16 |
| 10-50 |
=5.5 |
=25 |
=18 |
| 50-750 |
=6.2 |
=25 |
=18 |
| 750-1000 |
=6.5 |
=22 |
=16 | | |
IPTV: End-to-End Architecture
