Z-Light 6TX/16TX/26TX Intelligent Direct Modulated Optical Transmitter
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FAX: (717) 249-3253
6.2 Troubleshooting
If there is a problem or issue, use Table 6-1 below to analyze the symptoms and potential
resolutions.
Table
6-1: Failure Analysis and Troubleshooting Solutions
Failure Observations
Failure cause
Solution
Power on, the front panel
display screen and power
indicator are both off.
Switching power supply couldn't
start; equipment; internal DC
power supply is not working.
Check if the AC power is normal
(should be AC: 110V-240V). If the
supply voltage is normal, it could be a
failure of a switching power supply
module. Please contact the dealer or
our distributor in your country.
Power on; the display screen is
off, only the power indicator is
on.
The internal microprocessor is not
working.
Please contact the dealer or our
distributor in your country.
Power on; the optical output
power displayed on the front
panel display screen and laser
status indicator are both normal,
but the actual measured optical
output power is low.
1.
The poor quality of the test
jumper.
2.
The active fiber connector or
adapter may be contaminated.
3.
The ceramic tube in the
adapter may have been
broken.
1.
Replace with a good quality test
jumper.
2.
Clean the contaminated active fiber
connector or adapter. For specific
cleaning methods see section 6.1.
3.
Replace the damaged adapter.
After initial startup, the video
image has an obvious netlike
curve or large particles and/or
highlights.
1.
The received optical power is
too high; the output level of
the optical receiver module is
too high and the
intermodulation index of RF
signal is deteriorating.
2.
The RF signal input of the
optical transmitter is too high;
beyond the device’s AGC
control range, resulting in
deterioration of the
intermodulation index.
3.
The intermodulation index of
the RF signal input of the
1.
Check the received optical power
and make appropriate adjustments
(i.e. add optical attenuation).
2.
Check the input level of the optical
transmitter RF signal, and adjust to
the device’s required input range.
(RF signal input level should be
72--88dBμV).
3.
Check the intermodulation index of
the RF signal input of the optical
transmitter and make appropriate
adjustments.