Table of Contents
Advertisement
RATE - HD:
This Green LED indicates that the reclocker is locked to the 1.485 Gb/s HD rate.
EDH DISABLED:
This Yellow LED indicates that the user has deactivated error detection on the card
edge display for SD signals. Press and hold the pushbutton until the LED goes Off
to enable EDH detection on card edge display for SD mode.
REMOTE:
This Yellow LED located beside the MASTER jumper indicates that local controls of
the card are disabled, and that the card is under control of the VistaLINK
(See section 6 for information about VistaLINK
4.2.
DOT-MATRIX DISPLAY
Additional signal and status monitoring is provided via the 4-digit dot-matrix display located on the card
edge. The card-edge pushbutton is used to select which data is being displayed in the alphanumeric
display. Each time the pushbutton is pressed, the display advances to the next available display. A
message indicating what display mode is active is shown for one second. After one second without the
pushbutton being pressed, the selected display data is shown.
The following display messages indicate what is being displayed.
EQ
STD
EDH
The details of the equalization strength, video standards, and EDH error displays are described in sections
4.2.1 to 4.2.2.
4.2.1. Displaying The Equalization Strength
To display the Equalization strength, press the pushbutton one or more times until the EQ message is
shown on the display. After one second the applied equalization strength will be shown represented as a
percentage of the maximum equalizer capability.
EQ
0 – 100%
LOS
4.2.2. Displaying the EDH Errors
For SD rates EDH errors are displayed in a different manner than optical power, and video standards.
When EDH error detection is enabled, the display of EDH errors will take precedence, and overwrite the
existing indication with the message EDH. The EDH error display shows if any EDH errors have occurred
during the previous 1 second interval. If the EDH errors are continuous, then the display will alternate
between the EDH display and the selected video standard or equalization displays, allowing both to be
monitored. EDH detection is not available for HD input signals.
To enable the EDH error display, press and hold the pushbutton until the EDH DISABLE LED goes Off.
To disable the EDH error display, press and hold the pushbutton until the EDH DISABLED LED turns On.
7707EO-HD SD/HD Re-Clocking Electrical to Fiber Converter
Equalization Strength
Video Standard in Use
EDH Errors (for SD only)
The following list describes the available selections.
Indicates applied equalization (e.g. 1m 1694A coax
0% to 100%
on input = 0%, 125m = 100%).
Indicates that no valid input signal is present.
LOS
Revision 1.5
7700 Multi-Frame Manual
monitoring and control.)
®
7707EO-HD - 9
interface.
®
Advertisement
Table of Contents
