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1.3 Panel Descriptions
page 4 Document no. 93-005-35-C5
1.3 Panel Descriptions
On the Front Panel of the 7870 IFL units are two LEDs. Both LEDs
should be on when the unit is in use. T
The LEDs on the Front Panel of the
7870 Transmitter and Receiver
are:
LED Name LED Function
Laser
Indicates if the laser is functioning
RF
Indicates RF signal level
• Green: Input level is within 3 dB of specification (level is -2 to -28
dBm)
• Amber: Input level exceeds maximum recommended level by 3
dB or more (level is >-2 dBm)
• Off: Input level is below minimum recommended level by 3 dB or
more (level is < -28 dBm
Table 1 7870T Transmitter LEDs
LED Name LED Function
Opt.
Indicates if the optical input power is above the minimal level [≥3 dBm]
RF
Indicates RF signal level
• Green: Input level is within 3 dB of specification (level is -2 to -28
dBm)
• Amber: Input level exceeds maximum recommended level by 3 dB
or more (level is >-2 dBm)
• Off: Input level is below minimum recommended level by 3 dB or
more (level is < -28 dBm
Table 2 7870R Receiver LEDs