QPSK digital TV modulator
adopts advanced digital signal processing technology, of which receiving port
can directly use digital satellite receiver for receiving, thus fully complying
DVB-S standard. Not only can it gain relatively high frequency spectrum usage
ratio, having very strong anti-interference and relatively high price
performance ratio, but also it can well comply with analogue FM microwave
equipment.
QPSK digital TV modulator
adopts various processing method, such as random energy spread processing, RS
coding, convolution interweave, contracting convolution coding, and
pre-modulating baseband shaping processing, etc. all these contribute a high
guarantee to the data transmitting performance. It’s a high performance QPSK
modulator for transmitting digital TV and other digital signal.
Features
l
Complying DVB-SETS300-421 QPSK modulating standard
l
IF output frequency range 950MHz~2150MHz
l
Build-in frequency synthesizer, support uplink frequency
conversion in U band or L band
l
Ports complying ASI, SPI standard
l
Achieving MMDS effect with FM microwave
Specification
|
Modulate
mode |
QPSK |
|
|
Input port |
ASI standard port |
|
|
Output
port |
75Ω F head |
|
|
RF
output range |
950~2150MHz |
|
|
Output
level |
≥-8dBm |
|
|
Output
level adjustable range |
0~20dB（0.5 dB stepping） |
|
|
Symbol
rate |
0-45MBauds |
|
|
MER |
≥14dB |
|
|
BER |
≤1X10-8 |
|
|
FEC |
1/2, 2/3, 3/4, 5/6, 7/8 (optional) |
|
|
Miscellaneous |
Dimension |
|
|
Temperature |
0~ |
|
|
Power |
220VAC±10%, 50Hz, 25W |
|
|
Installation hole
distance |
|
|