Instructions

930XC-20C • 930XC-20M • 930XC-30F • 930XC-30P
Tempo Communications Inc. 1390 Aspen Way • Vista, CA 92081 USA • 800-642-2155
18
Pulse Width Conguration
The selection of pulse width affects the dynamic range and resolution of the measurement. With a narrow pulse width there will
be higher resolution and smaller deadzone; however, the dynamic range will be decreased. A wide pulse width will bring higher
dynamic range and measure comparatively longer distance, but resolution and deadzone will be increased. Therefore, users
should make the choice between dynamic range and deadzone.
The options for pulse width will change according to the distance range selected.
Under the parameter conguration menu use p and q to highlight “PulseWidth.” Press Enter to select a value (Figure 3-11).
Press to exit.
Use p and q to highlight the pulse width. Press Enter to conrm.
Notes:
• “Auto” is the default setting.
• When the range is set to “Auto,” the pulse width automatically is set to “Auto.”
Average Time Conguration
Average time will affect the SNR directly. The longer the average time is, the higher SNR is, as well as dynamic range. Therefore,
when measuring long-distance optical ber, a long average time should be selected in order to review events at the long-
distance end.
Under the parameter conguration menu use p and q to highlight “Avg. Time.” Press Enter to conrm (Figure 3-12).
Press to exit.
Use p and q to highlight the pulse width. Press Enter to conrm.
Notes:
• There are ve levels of predened average time: 15 s, 30 s, 1 min, 2 min, and 3 min.
• The default setting is “30 s.”
Wavelength Conguration
Under the parameter conguration menu use p and q to highlight “Wavelength.” Press Enter to change the
wavelength (Figure 3-13).
Figure 3-11. Pulse Width Conguration
Figure 3-12. Average Time Conguration