HP 85052c Operation & User’s Manual
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HP 85052c, Recession Limits The female receptacle recession and the male pin recession, along with other mechanical specifications of Port 1 and Port 2, must be within limits to meet complete measurement specifications. The precision adapters supplied in this kit are manufactured to metrology standards in order to obtain the best measurement accuracy specifications. If other connectors than these precision adapters are used as the test ports, they must be fully inspected. Using other than the highest quality connectors as the test ports will reduce accuracy and repeatability as well as possibly damaging the calibration standards. Precision Connector
HP 85052c, C H A I? T E R T W 0 Performing a TRL Z-Port Measurement Calibration This example describes use of the HP 3.5 mm precision calibration kit to measure an insertable device. When the test device is insertable, the test ports can be connected together to establish the Thru connection during calibration. The procedure used for performing any measurement calibration is as follows: . 1. Clean and inspect all connectors. 2. Initiate measurement calibration procedure and measure standards. 3. Verify the calibration. 4. Connect the device unde
HP 85052c, CHAPTER T H R E E Noninsertable Devices Noninsertable Device Configurations General Theory Th e o owing sequence describes the adapter removal f 11 method of calibration for measurement of a noninsertable device. This procedure is the most complete and effective calibration procedure for measurement of noninsertable devices. Although this technique does require two separate 2-Port calibrations, it remains the only traceable method for minimizing the uncertainty in this measurement. The three precision adapters in this calibration kit provide the parts required to make the process relatively easy. Detailed information about the adapter removal calibration is contained in HP
HP 85052c, Configure Port 1 and Port 2 s everal configurations are possible, depending upon the frequency range, available cables, operator convenience, and DUT requirements. Following is an example hookup using the two-cable set and two examples using a single cable. The appropriate precision adapters are installed on the ends of the cables and become Port 1 and Port 2. TEST SET PORT 1 TEST PORT ANTI-ROTATION TEST SET PORT 2 I 81 !~, !il ADAPTER ANTI-ROTATION PORT 1 PORT 1 PORT PORT 1 2 Dual Cable Setup PORT 2 Single Cable, Port 1 Female PORT 2 Single Cable, Port 1 Male 15
HP 85052c, 28 C H A P T E R Other Calibrations F 0 U R Changing the Air Line of your application requires a frequency range slightly Frequency Range beyond the standard frequency range of one of the precision air lines, you may extend the frequency range of one of the air lines in order to accomplish the calibration by connecting only one of the air lines. The error coefficients are determined with best accuracy when the Thru and the Line phase response is separated by t 90 degrees at corresponding frequencies. When the transmission phase response of a line standard is the same or gets very close to zero or 180 degrees of the Thru standard at the same frequency, the result
HP 85052c, l Move the nut forward to engage the threads, tighten finger tight, then use the spanner and the torque wrench to achieve the final torque. Connect Port 2 . Press 2-7 LINE. The HP 8510 makes six measurements. All frequencies of the current range are measured, but only data from 1 GHz to 7 GHz is used to compute error coefficients. To remove the 2-7 GHz air line: l Loosen the air line nut and carefully move Port 2 away from Port 1. Disconnect Port 2 Engage the Tool TURN f\ HOLD l Insert the tool and lightly press it to engage the cent
HP 85052c, Install Test Port Return Cables When all parts are ready for use, connect the test port extension cables. To connect a cable to the test set: Loosen the test port anti-rotation clamp securing screw and slide the clamp over the cable far enough to provide access to the cable connector. Connect the cable to the test port and tighten using the torque wrench. Slide the clamp toward the port, aligning it so that the flats on the clamp mate with flats around the test port. Tighten the clamp securing screw. This clamp keeps the cable from becoming loose from the test set connector. Install Precision Adapters
HP 85052c, Air Line Frequency COVerage This illustration shows the frequency range covered by the air line and fixed loads for the Lines part of the TRL 2-Port calibration procedure. If measuring over the entire frequency range, measure the 7-32 Line first, then the 2-7 Line, then the O-2 Loads. If measuring over a reduced frequency range, only those standards for that frequency range need to be measured. For example, if you are testing over the 3-22 GHz range, only the 7-32 Line and the 2-7 Line must be measured. The standard label for the 2-7 Line would indicate that its data is valid only from 2 to 7 GHz. However, you may choose to use data from the 2-7
HP 85052c, /o I Torque Wrench Tools At q or ue wrench and spanner wrench are included in the kit to loosen and tighten the connectors. The small torque wrench is used for the 3.5 mm nuts. The large torque wrench is used for the 20 mm nuts on the precision adapters. It is included with the test set. The spanner wrench is used to hold the precision adapter while using the appropriate torque wrench to tighten the connection. Also included is the hex wrench for tightening and loosening the adapter anti-rotation clamp securing screws. Spanner Wrench When making connections, turn the nut on the device, never turn the device itself. Turning the dev
HP 85052c, Reflect Standards Reflect Standards -Male and Female Short Circuits Isolation Standards isolation Standards -Male and Female Broadband Loads Precision Adapters In this TRL 2-Port calibration, the reflect standards are identical short circuits with one connected to Port 1 and one to Port 2. The male short circuit and the female short circuit are manufactured to tolerances that assure equivalent responses. If one is damaged or otherwise becomes defective, calibration errors will result. Errors will also result if the open circuits are used in the procedure instea
TURN n HOLD . Carefully align and engage the Port 2 female contact with the Port 1 male contact. l Tighten finger tight, then use the spanner and torque wrenches to achieve the final torque. Connect Port 2 l Press 7-32 LINE. The HP 8510 makes six measurements. All frequencies of the current range are measured, but only data from 7 to 32 GHz is used to compute error coefficients. To rem
Measure Standards N ow perform the TRL 2-Port measurement calibration procedure using the HP 85052C 3.5 mm Precision Calibration Kit. Note: The standards are measured in the order: Thru, Reflect, Line, Isolation in order to connect the load standards just once. Press: CAL CAL 1 TRL 2-PORT l Connect the TRL male adapter (Port 1) to the TRL female adapter (Port 2). l Press THR
HP 85052c, TRAINING VIDEOTAPE USER’S PRODUCT NOTE PRODUCT NOTE CONNECTOR SERVICE GUIDE a510-5A 851 O-8A CARE CARD MANUAL Using the HP 85052C HP 85052c Operating and Precision Service Manual Calibration Kit HP 85052C Precision Calibration Kit Operating and Service Package
Hold the tool close to the connector without squeezing the tool. Carefully pull the assembly away from the connector. Remove the 7-32 Line . Check to see that both the inner and the outer conductors have been removed and are secure in the installation tool. If any part of the air line remains attached to the male port, first press the tool back onto the connector. Then, try to withdraw the tool
HP 85052c, Measurement Errors The gage measures the pin depth (recession) of the connectors. If the pin depth to too far negative, errors will result from excessive air gap in the connection. Connector Damage If the pin depth is positive (protrusion), both mating connectors will almost certainly be damaged. Also, if the male pin diameter is greater than the maximum 3.5 mm specification, it will cause permanent damage to the female receptacle. If you try to measure the pin depth and the gage will not fit over the pin, it is an immediate indication that the pin is too large and must not be connected to the precision adapters. The male pin of the DUT connector may fit into the gag
HP 85052c, Calibration Kit Components Air Lines The HP 85052C 3.5 mm Precision Calibration Kit contains components useful for several different calibration tech- niques. The parts used for the TRL 2-Port calibration are: l Longer precision air line for 2 to 7 GHz l Shorter precision air line for 7 to 32 GHz l Male and female short circuits l Male and female fixed loads Other parts included are: l Three precision TRL adapters . Two adapter anti-rotation clamps l Calibration kit definition tape l Male and female open circuits l Tools Note the reference card
HP 85052c, Using Connector Gages Before Connecting Gaging is optional for the precision connectors in this calibration kit if the male and female center conductors are concentric and do not show physical damage. However, due to the large range of dimensions found on most DUT connectors, the DUT connectors must always be inspected and gaged before connecting them to the precision adapters. This is not usually a problem for the DUT female connectors, but may be a problem for DUT male connectors, especially the economical SMA and SMA-compatible types. BLACK %G ( RECESSION ) RED PLUS SIGN (NOT USED) LIMIT P
HP 85052c, TABLE OF CONTENTS Chapter 1 Introduction to the Calibration Kit Calibration Kit Components Air Lines O-2 GHz Loads Reflect Standards Isolation Standards Precision Adapters Tools 5 Chapter 2 Performing a TRL 2-Port Measurement Calibration Electrostatic Discharge Clean and Inspect Cleaning Using Connector Gages Configure Port 1 and Port 2 Install Test Port Return Cables Install Precision Adapters Air Line Frequency Coverage Load Calibration Kit Definition Measure Standards When Stop Frequency is Greater than 7 GHz When Start Frequency is Le
HP 85052c, Adapter Removal Calibration Procedure Create Cal Set for Port 1 Port 2 Cal Srt Create Cal Set for Port 2 Port 2 Cal Set Adapter Removal Mathematics Renmr the Adapter and Cormect the DUT First create the Port 1 calibration set by performing the TRL 2-Port calibration between Port 1 and the adapter. Keep the adapter connected to Port 2 during the entire procedure. Save the calibration in Cal Set 1. Next create the Port 2 calibration set by performing the TRL 2-Port calibration between Port 2 and the adapter. Keep the adapter connected to Port 1 during the entire procedure. Save the calibration in Cal Set
HP 85052c, When Start Frequency is Less Than 7 GHz If the start frequency is less than 7 GHz, install the 2-7 GHz air line as follows: TURN f\ HOLD . . Move the Port 1 nut to its standard position. Carefully insert the air line outer conductor and center pin into the male connector using the installation tool. Hold the air line outer conductor and tighten the Port 1 nut finger tight. Use the torque wrench to achieve the final torque. Connect the 2-7 Line l Press the tool lightly to engage the center conductor. Engage the Center Conductor l Squeeze the tool to close the slot, th
HP 85052c, Air Lines Removed From installation Tools Each air line consists of a separate outer conductor and center conductor and includes its own tool used for installing and removing the parts from the test port. Both are insertable. Each has a male end and a female end. The male end of the air line fits into the installation tool. The parts may be removed for inspection, if necessary, but the tool is always used to install the parts for calibration. Use extreme care in handling these parts. Use static dissi- pative finger sheaths, or “finger cots” to prevent contami- nation. Liquid or solid r
HP 85052c, When Stop Frequency is Greater than 7 GHz If the stop frequency is greater than 7 GHz, install the 7-32 GHz air line as follows: l Move the Port 1 nut to its standard position and carefully insert the air line into the male connector using the installation tool. Insert Air Line l Squeeze the installation tool (closing the slot) to release the center conductor. Then pull the tool away from the connector, leaving the outer and the center conductors in place. Sqeeze Tool to Release, then Pull GOOD BAD -IL- GAP l Examine the outer and center conductors to see that they are in place and concentric. If the center conductor is not centered, use the installation tool to align
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