Set Reference Operation; Trigger Out Operation - ILX Lightwave MPS-8033 Series User Manual

L O C A L O P E R A T I O N
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C H A P T E R
General Operating Procedures

Set Reference Operation

The reference level for the dB scale is set using the SET REFERENCE button. The following
procedure indicates how to use this feature.
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TRIGGER OUT Operation

The TTL OUT trigger signal is available whenever the 8033 output is on. The TTL OUT trigger signal
has the same frequency as the optical output signal, but at a TTL level. To use the OUT trigger,
connect the device which is to be triggered to the 8033's back panel TTL OUT connector. Then
operate the 8033 in any mode. In CW mode the TTL OUT signal may be used to indicate whether
the output is on or off.
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With the output on or off, adjust the power to the desired reference level. It is acceptable
to set the reference in the mW or dBm scales.
Press the SET REFERENCE switch. Two things occur: The reference power level used
by the dB scale is set to the level chosen in 1, and the display changes to the dB scale
and displays 0.00.
When it is no longer desirable to display power in the relative mode, merely change the
display scale to mW or dBm. The reference power will be held in memory until a new
reference is chosen.
To view the reference power, select the dB display mode and adjust the knob until the
display indicates 0.00 dB. Then change the display mode to mW or dBm to view the
reference. Alternatively, the reference level may be calculated by subtracting the display
value in dB from the display value in dBm.