Keysight Technologies 85052B User's And Service Manual

3- 14 85052BUse, Maintenance, and Care of the DevicesConnectionsConnectionsGood connections require a skilled operator. The most common cause of measurement error is badconnections. The following procedures illustrate how to make good connections.How to Make a ConnectionPreliminary Connection1. Ground yourself and all devices. Wear a grounded wrist strap and work on a grounded, conductive tablemat. Refer to “Electrostatic Discharge” on page 3-2 for ESD precautions.2. Visually inspect the connectors. Refer to “Visual Inspection” on page 3-3.3. If necessary, clean the connectors. Refer to “Cleaning Connectors” on page 3-4.4. Use a connector gage to verify that all center conductors are within the observed pin depth values inTable 2-2 on page 2-4. Refer to “Gaging Connectors” on page 3-6.5. Carefully align the connectors. The male connector center pin must slip concentrically into the contactfinger of the female connector.6. Push the connectors straight together and tighten the connector nut finger tight.CAUTION Do not turn the device body. Only turn the connector nut. Damage to the center conductorcan occur if the device body is twisted.Do not twist or screw the connectors together. As the center conductors mate, there is usually a slightresistance.7. The preliminary connection is tight enough when the mating plane surfaces make uniform, lightcontact. Do not overtighten this connection.A connection in which the outer conductors make gentle contact at all points on both mating surfacesis sufficient. Very light finger pressure is enough to accomplish this.8. Make sure the connectors are properly supported. Relieve any side pressure on the connection fromlong or heavy devices or cables.Final Connection Using a Torque WrenchUse a torque wrench to make a final connection. Table 3-1 provides information about the torque wrenchrecommended for use with the calibration kit. A torque wrench is included in the calibration kit. Refer toTable 6-1 on page 6-2 for replacement part number and ordering information.Using a torque wrench guarantees that the connection is not too tight, preventing possible connectorTable 3-1 Torque Wrench InformationConnector Type Torque Setting Torque Tolerance3.5 mm 90 N-cm (8 in-lb) 9.0 N-cm (0.8 in-lb)