Keysight Technologies N4000A SNS Series Operating And Service Manual

Contents

A Caring for Connectors74 Keysight N4000/1/2A Operating and Service ManualMaking ConnectionsMaking good connections is easy if a few simple principles are kept in mind:– All connectors must be undamaged, clean, and within mechanicalspecification.– The connectors must be precisely aligned with one another and in flat physicalcontact at all points on the mating plane surfaces.– The connection must not be too tight or too loose.– Lateral or horizontal (bending) force must not be applied to the connection,nor should any connection ever be twisted.Align connectors carefullyCareful alignment of the connectors is critical in making a good connection, bothto avoid damaging connectors and devices and to assure accurate measurements.As you bring one connector up to the other and as you make the actualconnection, be alert for any sign that the two connectors are not aligned perfectly.If you suspect that misalignment has occurred, stop and begin again.Alignment is especially important in the case of sexed connectors, such asprecision 3.5 mm and SMA connectors, to avoid bending or breaking the contactpins. The center pin on the male connector must slip concentrically into thecontact fingers of the female connector. This requires great care in aligning thetwo connectors before and as they are mated.When they have been aligned, the center conductors must be pushed straighttogether, not twisted or screwed together, and only the connector nut (not thedevice itself) should then be rotated to make the connection. (slight resistance isgenerally felt as the center conductors mate).Alignment of precision 7 mm connectors is made easier by the fact that theconnector sleeve on one of the connectors must be extended fully (and the sleeveon the other connector retracted fully) in order to make the connection. Extendingthe sleeve creates a cylinder into which the other connector fits.If one of the connectors is fixed, as on a test port, extend that connector sleeveand spin its knurled connector nut to make sure that the threads are fullyextended, while on the other connector, fully retract the connector sleeve.