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OPERATION
Installing OMH-6700 Series Measurement Heads
16 LDM-4990
CHAPTER 2
Installing OMH-6700 Series Measurement Heads
The EMS-499 Measurement Head Option allows you to attach some OMH-6700
Series Measurement heads to the LDM-4990 for power and wavelength
measurement of the device under test.
To install an OMH-6700 Measurement Head, refer to Figure 2.10, and follow these
steps:
1 Align the flat on the 6700 measurement head with the flat on the mounting post of the
4990 with the aperture facing down.
2 Insert the #6-32 x 1" attaching screw supplied with the 4990 through the countersunk hole
in the mounting post and thread into the measurement head.
3 Tighten the screw with a 9/64" allen head wrench.
Note: Use caution when tightening the screw into the measurement head to avoid
damaging the threads.
Figure 2.10 Installing the OMH-6700 Measurement Head