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The most recent user selection will be maintained in non-volatile memory in the event of power
loss to the module.
4.2.1. Display of Warning Status Indications
The top level, default display indicates overall card status and warnings:
Card is functioning properly
OK
No valid optical link established between the 7707CVT-8 and the 7707CVR-8
LINK...LOSS
Flashing alternates between LINK and LOSS
Pressing the pushbutton from this default display will allow the user to select from STAT (status) and
CTRL (control) menu items.
4.2.2. Displaying the Video Standard
The 7707CVR-8 detects the video standard of the signals present at its inputs. To display the video
standard, select the STAT menu item in menu level 1, select VID from menu level 2, then use the toggle
switch to display the desired video channel (from VID1 to VID8) and press the pushbutton to select it.
For the sake of simplicity, only the VID1 menu item will be described in the manual.
STAT
VID
VID1
NTSC
PAL
LOS
BLOK
4.2.3.
Displaying the Optical Power
The 7707CVR-8 module can measure and display the input optical power over a range of -1dBm to –
40dBm at increments of 1dBm for the standard version and -7dBm to –30dBm in 1dBm increments for the
–H version. To display the input optical power, select the STAT menu item in menu level 1, then use the
toggle switch to display the PWR option and press the pushbutton to select it.
STAT
PWR
OVER
-1 to –40
-7 to –30
LOW
The video standard will be displayed from the list below:
NTSC displays that NTSC is present.
PAL displays that PAL is present.
LOS displays that there is a Loss of Signal.
BLOK displays that there is a Channel Block.
The display will show one of the following:
Indicates optical input power exceeding –1dBm for standard
OVER
version and -7dBm for "–H" version
Optical input power within this range (Standard Version).
-1 to –40
Optical input power within this range (-H Version).
-7 to –30
Input optical power low (< -40 dBm for Standard Version, < -30
LOW
dBm for –H Version)
Revision 1.0
7700 MultiFrame Manual
7707CVR-8 Eight Analog Video Fiber Receiver
7707CVR-8 - 9
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