138 8163A/B, 8164A/B, 8166A/B User’s Guide
5 Tunable Lasers
4Move to <On>, by using the cursor key, and press Enter to enable the
output. The LED beside the optical output is lit constantly.
How to Set Power and Attenuation
Attenuator
If your tunable laser has an built-in optical attenuator, you can set the
laser output power and then set the attenuation.
1 Move to the Tunable Laser channel and press [Details].
2 Choose the Output 2, the high power output, for a Tunable Laser
module with two optical outputs, as described in How to Set the
Optical Output on page 135. For modules with one optical output this
is not necessary.
3 Move to the power parameter, [P], and press [Pwr unit].
4 Move to <dBm> and press Enter.
5 Type 5.000, using the numerical keypad and press Enter.
6 If [Power Mode] is not set to <Manual Att.> (see Figure 77), that is, it is
set <Automatic>, perform the following steps:
a Move to [Power Mode] and press Enter.
b Move to <Manual Att.> and press Enter. The attenuation parameter,
[Atten.], appears, see Figure 79 on page -139.
7 Move to [Atten.], type 3.000, using the numerical keypad, and press
Enter.
If you enable the laser output for a module with two optical outputs by
pressing the Active hardkey on the module’s front panel, you
automatically choose the optical output for that module. For example, if
you press the Active hardkey beside Output 1, the Low SSE optical
output, you choose <Low SSE> as the optical output, the LED beside the
Output 1 lights constantly.
Furthermore, if you then proceed to press the Active hardkey beside
Output 2, the High Power Output, you choose <Both (master:1)> as the
optical output, the LED beside the Output 2 flashes.
If you press the Active hardkey beside a flashing LED, you disable the
unregulated optical output. If you press the Active hardkey beside a
constantly lit LED, you disable both optical outputs.
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