Communications Specialties FIBERLINK XRD-8050/RK Panduan Pengguna - Halaman 14
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Halaman CetakOVERALL SYSTEM CHECKOUT AND TROUBLE-
Occasionally, during the installation of a fiber optic transmission system,
difficulties arise that are the result of factors beyond the control of the installer.
It is to simplify the task of the installer that the following general checkout
procedure is included.
A. Check Transmitter (or transmitting section of a transceiver)
1.
Is the operating power (DC, AC, Voltages) correct?
2.
Are the pins being used on the connector or terminal block correct?
.
3.
Is the correct signal level present at the transmitter input?
4.
If the unit is a digital transmitter, does the transmitting LED glow
dimly when a signal is applied? Note that this is only true at an
operating wavelength of 850nm. Light at 1300nm is totally invisible. *
5.
If the unit is an analog or video transmitter (at 850nm) is there a
continuous dim glow from the transmitting LED? *
6.
Is the optical connector on the transmitter clear of any obstruction or
minute dirt particles?
7.
Does it matter that signal ground and power ground of many systems
are common?
8.
Does the fact that signal ground, power ground and the housing are
common cause a short-circuit anywhere in the system?
* The above visual check should only be attempted with LED type emitters.
NEVER LOOK DIRECTLY AT AN OPERATING
US Government regulations require that all equipment using Laser Diodes be
clearly identified with appropriate warning labels. Be sure to heed these labels.
SHOOTING TECHNIQUES
LASER DIODE, REGARDLESS OF THE
OPERATING WAVELENGTH
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