Features

• Reference noise source – For site verification
• Output up to 4.5 GHz
• Stable frequency output
• Auto RF shutoff when battery voltage is low

Com-Power CGO-505 Application

EMI measurement are usually conducted in Open Area Test site (OATS) or an Anechoic chamber. OATS and chambers must be calibrated before it is put into service using published calibration procedures at regular intervals. These calibration methods are too elaborate and time consuming to be performed before each test to ensure that the data taken is consistent and accurate.

The Comb Generator is a quick site verification tool. The test engineer will be able detect potential problems with site by maintaining a log of the Comb Generator radiated readings prior to taking measurement from a product in the same setup. For instance, test engineer will able to detect problems with antennas, cables, preamplifiers and receiver immediately by comparing previous Comb Generator data in the same setup. The same method can be utilized when EMC emissions measurements taken from the same products varies when the test is repeated.  It is difficult to determine if it is the test site or the product is causing the variation. Using the same test setup, measurement can be taken with a Comb Generator in place of the product. This data can be compared with previous Comb Generator measurements to determine the problem. Other uses of the Comb Generator output include testing cables and filters.