3
rd
Generation Rack-
Mount RDMS™
17
Quasonix, Inc.
3.3.3
Electrical Signals
By default, the output data is valid on the falling edge of the clock, as shown in Figure 9. The polarity of the output
clock may be inverted by toggling the Clock Pol
arity setting in either user interface. The RM RDMS™ can be
operated through its front panel interface or web-
based browser interface (RDMS™ Browser Interface).
Figure 9: Baseband Signal Timing
The RF input to the receiver is a 50 ohm interface.
The RM RDMS™ also provides a 70 MHz IF output for each channel for troubleshooting purposes.
3.4 Browser Interface
The 3
rd
Generation Rack-
Mount RDMS™ Receiver contains a built
-
in web server. The receiver’s browser
-based
graphical user inte
rface enables configuration and monitoring of one, or multiple, RDMS™ units on the user’s
network. While the Browser Interface works with most modern browsers, the latest version of Firefox or Chrome is
recommended. Quasonix recommends running Firefox in Private mode or disabling caching to improve
performance. HTML5 compatibility is required. The Browser Interface (BI) provides easy-to-read, real-time status
information to the user, thus eliminating the need for direct access to the front panel.
Browser Interface is laid out intuitively with all primary control and monitoring functionality for Channel 1,
Channel 2, and diversity combiner in one window.
To access the Browser Interface:
1.
Plug a network cable into the RDMS™.
2.
Apply power to the RDMS™.
3.
Open a browser on the PC.
The rack has an IP address assigned to it when the user sets it up. If it is static, the user must provide an IP
address. If it is dynamic, the network assigns an IP address to the RDMS™. The operator needs to know
this IP address. The Ethe
rnet screen on the RDMS™ front panel displays the IP address. (Refer to section
4.4.2.27.2 for additional information about the Ethernet screen.)
Bit period
(360 deg)
Clock jitter and data to clock
skew reference point
data=1 (MARK)
data=0 (SPACE)
CLOCK
NRZL
DATA
Baseband Signal Timing - 0 degree clock
data=1 (MARK)
