Home > Products > S-DMB > CDM Transmodulator
 
 
               
TDM Multiplexer
Features
Input : L-band(1~1.55 GHz) QPSK Modulated TDM Signal
Output : S-band(2.36~2.655 GHz) CDM Signal
Baseband Differential I/Q output Available
Capture QPSK Demodulated TDM Signal with 2.304 Mbps
PN Code and GAP ID are adjustable
Single or full auto test for S-DMB Terminal is available (BER Measurement)
Single/Two Tone test is available
External 20 dBm Amplifier is available (option)
Generate CDM output from stored Baseband TDM Signal
TDM generation using TS stream is available
All function and status can be monitored and controlled in GUI environment
CDM Signal black-out test is available
AWGN generator (S/N range -21.5~+14.5 dB, 0.1 dB step) is available (Option)

 
Specifications
L-Band Input
Frequency L-Band 1~1.55 GHz
Step Frequency 500 KHz
Roll-off 35%
Symbol Rate 18.432 Mbps
Data Type QPSK Modulated TDM Signal
Connector F-Type Female (75 Ohm)
S-Band Output
Frequency S-Band 2.360~2.655 GHz, 1Hz step
Accuracy ≤ 0.01 ppm (±3.426Hz)
Data Type 32 Ch. CDM Signal
Roll-off 22%
Short Code 64 bits Walsh
Long Code Truncated M-sequence (2048 bits)
Bandwidth 25 MHz
Output Power -117 dBm to 10 dBm (0.1 dB step)
QPSK EVM ≤ 2.5%
ACLR ≥ 55 dB
Connector N-Type Female (50 Ohm)
Baseband Output
Data Type Differential IQ Baseband 32 Ch. CDM
Output Power -16 dBm ± 0.5 dBm
QPSK EVM ≤ 2 %
Connector 4 SMA-type Female (50 Ohm)
 
Auto test (option)
Receiving Frequency Management
Receiving Frequency Stability
Max power input
Receiving Sensibility
Selectivity
Single/Two tone
Black out
AWGN (Additional White Gaussian Noise)