7700 MultiFrame Manual
7707IT Multi-Channel Intercom Fiber Transceiver
Revision 1.7
Page - 17
4.2.1. Card-Edge Display Warning Indications
There are flashing warning indicators that may appear on the display of the 7707IT. These warning
indications can overwrite other display text, and supersede each other by order of priority. By pressing the
pushbutton, a warning indication can be cleared from the display, and access to other menu items is
maintained. Possible warning indications are:
LASR…ERR:
Laser error - warns of laser (if equipped) end-of-life condition.
LINK…LOSS:
Optical link not established.
OK:
Optical link established, no video input or laser (if equipped) problems.
4.2.2. Displaying the Optical Power
The 7707IT can measure and display optical power over a range of –40 to +4dBm in 1dBm increments.
Please heed the maximum optical input power specification for the specific product option you possess.
Optical power monitoring is accommodated through the card-edge interface or
Vista
LINK
®
.
PWR
To display the optical power to the card-edge select the
PWR
indication in
menu level 1. The following list describes all possible indications for this
menu selection:
-40
to
+04:
Optical input power in dBm units.
LOW:
Optical input powers below –40dBm.
OVR:
Optical input powers exc4dBm.
-40 to +04 (dBm)
LOW
OVR
4.2.3. Selecting the Signal Status Indication Mode
The eight card-edge LEDs indicate the signal status of the eight respective intercom channels. Selectable
modes accommodate discrete signal presence indication of input audio, output audio, input data, and
output data. Presence of audio, data, input and output signals may also be combined to the LED of the
respective channel.
STAT
To change the card-edge LED indication mode, select the
STAT
menu item
in menu level 1. Toggle to the desired status indication selection shown in
the list below.
ALL:
Combines all of the below signal presence indications for each
channel.
AIN:
Input audio presence indication as per configured detection
threshold.
AOUT:
Output audio presence indication as per configured detection
threshold.
DIN:
Input data presence indication indicating signal transitions.
DOUT:
Output data presence indication indicating signal transitions.
The factory default status display is
ALL
.
ALL
AIN
AOUT
DIN
DOUT
