The "Higher
Baud Rate Coherent Driver Modulator" project will define a new version of the Coherent Driver Modulator supporting at least 96 Gbaud for the low modem implementation penalty segment of the coherent market for single optical carrier line rates beyond 400 Gbit/s.
Gross noted several specific technology initiatives that present measurement challenges, including efforts to increase basic
baud rates, to achieve higher symbol rates for a given
baud rate (using modulation schemes like PAM, for example), and to enhance link mechanisms by employing optical chip-to-chip links or using techniques like pre- and de-emphasis.
The selection of a suitable data bus depended mainly on specific requirements such as
baud rate, robustness, reliability, number of nodes in the network, type of aircraft (civilian or military) and price.
The transmitter circuit simply sends out data at a predefined
baud rate while the receiver synchronizes the data stream using predetermined parameters.
"If you halve the
baud rate you can take yourself out of the issue but you've slugged your response and you haven't really dealt with the issue." EMC may appear to have gone away as an upfront issue.
It has a very good theoretical
baud rate which attends 1Mbps, making this protocol more suitable for Wireless Personal Area Networks with low bandwidth (LR WPAN).
As shown in Figure 2, the CSU provides complementary CMOS output clocks, CLKHR and CLKHRB, at half the
baud rate driving one transmitter (TX), which transmits data on both transitions of the differential clock (CLKHR-CLKHRB).
Since the over-the-air
baud rate is 188K baud, this looks seamless to the user.
QUIZ OF THE DAY: 1 The Red Baron; 2 1940; 3 Messiah; 4 Oasis; 5
Baud rate; 6 Three (1975, 1977, 1984); 7 John Christie; 8 Loch Ness; 9 Syriana; 10 Montana.
ANSWERS: 1 The Red Baron; 2 1940; 3 Messiah; 4 Oasis; 5
Baud rate; 6 Three (1975, 1977, 1984); 7 John Christie; 8 Loch Ness; 9 Syriana; 10 Montana.
The high-speed, ruggedized Model 4165 fiber-to-USB interface converter adapts USB 2.0-compliant data from a standard PC to a serial asynchronous data interface over fiber with a user-selectable
baud rate of up to 3 Mbps.