
7700 MultiFrame Manual
7707CVRA Composite Video and Analog Audio Fiber Receiver
Revision 1.2 7707CVRA - 7
4. STATUS INDICATORS AND DISPLAYS
The 7707CVRA has 6 LED Status indicators and a 4 digit alphanumeric display on the front card edge to
show operational status of the card at a glance. The card edge pushbutton and toggle switch are used to
select various displays on the alphanumeric display. Figure 7-1 shows the location of the LEDs and card
edge controls.
4.1. STATUS INDICATOR LEDS
Two large LEDs on the front of the board indicate the general health of the module.
LOCAL FAULT: This Red LED indicates poor module health and will be On during the absence of a
valid optical link to a 7707CVTA module, or if a local input power fault exists (i.e.: a
blown fuse). The LOCAL FAULT indication can also be reported to the frame
through the FRAME STATUS jumper.
MODULE OK: This Green LED indicates good module health. It will be On when a valid optical link
to a 7707CVTA module is present, and board power is good.
There are four small LEDs on the back side of the board that indicate the presence of audio signals above
the detection level (See section 5.4.3 for information about configuring the audio detection).
AUDIO 1 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 1 input.
AUDIO 2 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 2 input.
AUDIO 3 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 3 input.
AUDIO 4 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 4 input.
4.2. DOT-MATRIX DISPLAY
Additional signal and status monitoring and control over the card’s parameters is provided via the 4-digit
alphanumeric display located on the card edge. The card edge toggle switch is used to select whether
you are displaying status from the card (monitoring mode) or setting control parameters for the card
(control mode). To select one of the display modes, press the pushbutton one or more times to exit the
current display mode and return to the mode select display (The display will show MON or SET). Press the
toggle switch to select monitor mode (MON) or control mode (SET). Once you have selected the desired
mode press the pushbutton to enter that mode. For information about setting up the module in control
mode see section 5.
When you are in monitor mode, the toggle switch determines what data is being displayed on the
alphanumeric display. Each time the toggle switch is pressed up/down, the display advances to the
next/previous display. A message indicating what display mode is active is shown for one second. After
one second without the toggle switch being pressed, the selected display data is shown. The card edge
pushbutton is used to return to the mode select menu item. The following display messages indicate what
is being displayed. The details of the each of the displays are described in the sections 4.2.1 to 4.2.3.