U
SER
M
ANUAL
750000992/16
5-7
MTS
e
Acquisition
❏
A manual acquisition mode that lets you configure your acquisition
parameters exactly for the fiber you wish to test.
After any acquisition (except in real time mode), an automatic measurement is
performed.
With multi-wavelength modules, the acquisition can be started automatically on
all the wavelenghts, each time the
START
button is pushed.
Note
For battery operation, the module will go into sleep mode if no
acquisition is made within two minutes. A message "powering up in
process" appears for few seconds at the next acquisition.
The presence of traffic in the fiber under test is automatically detected (see
"Detection of traffic" on page 5-13.
Real-time mode
To make an acquisition in real-time mode you must first configure all the
acquisition parameters you require and then press and hold the START STOP
key for more than one second.
A real-time mode acquisition cannot be used to make accurate measurements,
because of the high noise level, but is invaluable for quickly optimizing the
connections and observing the fiber while it is being manipulated.
1.
Use the following procedure to configure the acquisition parameters you
require for the fiber and the test:
•
Either select the
Acquisition
parameters you require in the
OTDR TEST
SETUP
window (see "Manual acquisition mode" on page 5-11).
•
Or press the
SET-UP
button to have a direct access to:
- the parameters : wavelength, pulse, range, resolution.
- the change to average mode.
2.
Press and hold for more than one second the
START STOP
key to start the
real-time acquisition.
The red
RUN
LED comes on to indicate a real-time acquisition is underway
and the screen shows the acquired trace in real-time mode. A connection
condition indicator is also displayed on the screen to indicate the status of the
fiber connection,
GOOD
or
BAD
.
Note
If the connection is not good, verify and clean the connector.
Note
A message "Low injection level, check your connection" is displayed
in real time/ average mode, when the injection level measured is
lower than a third of the max. level.
Connection quality indicator
The connection quality indicator readings provide the following connection
status information:
Status
Connection condition
Good
A good connection.
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