Outline
The function of JXDH-6701 Digital Frequency Converter is to
convert DVB RF signal of one channel into
another channel, and it dispenses with the aftertreatment of
decompressing, encoding and multiplexing to the digital signal. It
can be widely applied to satellite digital TV, digital broadcast,
CATV network and so on.
Features
The function of this product is to convert RF
signal of one channel into another channel
This product can uplink-convert medium frequency into radio
frequency, conversely it can
downlink-convert radio frequency into medium frequency, besides
it also can convert frequencies
between RFs or peer frequencies
This product is suitable for digital signal processing as well
as analogue signal processing
LCD real-timely displays various performance indexes
Having RF automatically gain control (AGC), making front-end system
working more reliably and stably
Micro-processing unit controls input/output signal levels
Adjacent frequency design, medium frequency processing, surface
audio wave filter (SAW), good interference suppressing
Local oscillation adopts unique phase-locked loop, low phase
noise, low phase jitter, low error rate, especially suitable
for digital signal frequency conversion
Down-link frequency conversion and up-link frequency
conversion adopt excellent qualified dual-balanced frequency
mixer, good linearity, low distortion
low clutter interference
RF and medium frequency system circuits adopt
multi-channel filters, which reduce outside signal
interference against local machine
RF output circuit adopts international brand amplifying
module, which guarantees output dynamic and parasite
suppression
19 standard structure, independent power supply, elegant
exterior, flexible corollary equipment.
Application Range
Satellite digital TV broadcast
MMDS digital TV head-end
Digital CATV network
Performance Indicator
RF Input Frenquency | 30-862MHz (central frequency of an optional aptotic channel) | User order guide: It is necessary to indicate the mode of RF input. A=QAM/CMTS B=QPSK; And conversion style. C=RF to IF D=IF to RF E=RF to RF For example: JXDH-6701-AE means RF input mode is QAM/CMTS and
conversion style is RF to RF. |
RF Input Mode | QAM、QPSK、CMTS (user must indicate a certain one in three modes) |
RF Input Level | 95dB |
RF Input Level Range | 85-105dB |
RF Input Impedance | 75 |
Input AGC
Range | ±10dB/±1dB |
Input Return Loss | ≥12dB |
RF Output Frequency | 110-862MHz (central frequency of an optional aptotic channel) |
IF Input and Output Frequency | 35-44MHz （125KHz Stepping） |
Maximum Output Level | ≥115 dB |
Output Inspection | -20 dBc |
Adjusting Range of Output Level | 0-20 dB(0.5dB Stepping) |
Output Impedance | 75 |
Output Return Loss | ≥12dB |
Phase Noise | ≥96 dBc@10KHz(30-300MHz) ≥94 dBc@10KHz(300-550MHz) ≥92 dBc@10KHz(550-860MHz) |
Frequency Conversion Precision | ≤5 KHz |
Spurious Output Rejection | ≥55dB（The distance of 2 contiguous frequency points＞20MHz） |
Audio In-Band Flatness | ±0.5dB |
General Specification | Size | 44mm×482mm×330mm |
Condition | 0-45(Work)20-80（Storage） |
Power Supply | AC22 |
