VeEX OTDR Series User Manual page 55

5. Select the operation mode.
CW: (Continuous Wave) Select this option to turn on the VFL continually to check for
faults.
1 Hz: (Pulse) Select this option to send intermittent light pulses. In some cases, this
makes it easier to identify faults (than continuous light). It can also be used with audible
detectors (toners) that can identify faint light or in well-lit (bright) environments.
6. Tap Auto Off. When VFL application is exited, the VFL powers down automatically.
7. Tap Turn ON to power the laser. The Caution box turns yellow.
8. You will observe that a red light emits from the end of the fiber to confirm continuity. This
red light will also appear at splices, joints, connectors, ODLs, etc. if any light is leaking.
9. Tap Turn OFF.
10. Disconnect the cable and replace covers.
When not in use, disconnect the cord from the port, replace dust covers, and keep
the port cap securely closed.
VFL will not work on G.655 bend insensitive patchcords or cables with dark jacketing
material or armored cables.
OTDR Series e-Manual, RevE00 Page 55 of 128