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Table 12: Signal Conditioning Mode Settings - Tektronix OI1125 Instruction Manual

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Table Of Contents

Table of Contents

Performance Verification

Compensate the Oscilloscope. The optical sampling heads are susceptible to

temperature fluctuations. Therefore, do the following prior to taking measure-

ments:

1. Disconnect the optical cable from the input to the oscilloscope.

2. Execute a compensation of the optical sampling head as soon as the

sampling head has reached operation equilibrium (that is, after a 30 minute

warm-up). Compensation for the entire system or for an individual optical

module can be initiated from the Utilities menu Compensation command.

For more information, see Optimizing Measurement Accuracy in the main

instrument user manual.

Oscilloscope. Set the TDS8000 Vertical settings as follows:

NOTE. Due to differences in oscilloscope firmware, your setup steps may differ

slightly.

3. From the toolbar, select Setup→Vertical.

4. Click the Optical>> button.

5. Set the Signal Conditioning mode:

a. In the Wavelength field, select 1550 from the drop-down menu.

b. In the Filter field, select OC-48 from the drop-down menu.

NOTE. You must change the Filter field setting when you take measurements at

other data rates. See Table 12.

A filter is not used for the 12.50 Gb/s data rate. Instead, set the Filter field to

None, and set the bandwidth to 12.50 GHz.