Keysight Technologies 11867A Operating And Service Manual

Contents

Keysight Technologies 11867A Operating And Service Manual Manual pdf 14 page image

14 Keysight 11867A Operating and Service GuideInstallationInitial inspectionVerify that the shipment is complete by referring to the contents list in the shipping container.If thecontainer or device appears damaged, or if the shipment is incomplete, contact KeysightTechnologies — see “Sales and Technical Support” on page 3. Keysight will arrange for repair orreplacement of incomplete or damaged shipments without waiting for a settlement from thetransportation company.Electrical inspectionVSWRTo check that the limiter meets the VSWR specification listed in Table 1, use any test system thatcan measure return loss. Terminate the unused port with an accurate 50 ohm termination. Incidentpower must be less than 1 mW (the limiting threshold).Insertion loss and frequency responseTo check that the limiter meets the insertion loss and frequency response specifications listed inTable 1, use any test system that can measure insertion loss. The input and output ports must beprovided with a good 50 ohm match. Incident power must be less than 1 mW (the limitingthreshold).LimitingThe power limiting performance can be compared against the typical performance shown inFigure 3 by using the same test system that is used to check insertion loss. Incident power shouldbe slowly increased from below 1 mW to 10 W while the output power is observed.Storage environmentThe limiter should be stored in a clean, dry environment with the following environmentallimitations:– Temperature: -40°C to +75°C– Humidity: <95% relative– Altitude: <7620 meters (25,000 feet)CAUTION During the test of limiting specifications, do not apply more than 10W average power to thelimiter. There should be <1.3 V dc with no RF applied, and 0.0 Vdc when RF is applied.Permanent damage to the diodes could result from exceeding these levels.