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Summary of Contents for Keysight 772D
- Page 1 Keysight 772D and 773D Directional Couplers Operating and Service Manual...
- Page 2 FAR 27.401 or DFAR 227.7103-5 (c), adhered to, could result in personal injury or as applicable in any technical data. death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met. Keysight 772D and 773D Operating and Service Manual...
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Page 3: Serial Numbers
(ac) input. This symbol indicates that the power line switch This symbol indicates that the power line switch is ON. is OFF or in STANDBY position. Keysight 772D and 773D Operating and Service Manual... -
Page 4: Safety Considerations
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards for design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability for the customer’s failure to comply with these requirements. -
Page 5: Waste Electrical And Electronic Equipment (Weee) Directive
To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http:// about.keysight.com/en/companyinfo/environment/takeback.shtml for more information. Sales and Technical Support To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/mta (product-specific information and support, software and documentation updates) –... - Page 6 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 772D and 773D Operating and Service Manual...
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Page 7: Table Of Contents
..........16 Voltage incident on 772D test Port and 773D input . - Page 8 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 772D and 773D Operating and Service Manual...
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Page 9: List Of Figures
......13 Figure 2 Voltage incident on 772D test port and 773D input ....17... - Page 10 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 772D and 773D Operating and Service Manual...
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Page 11: List Of Tables
........23 Table 6 Correction for element reflection of the 905A ....25 Keysight 772D and 773D Operating and Service Manual... - Page 12 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 772D and 773D Operating and Service Manual...
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Page 13: Description
They can be used for measurement purposes or for power leveling. The coupling in the 773D changes the same as the coupling variation of the input coupler in the 772D. This property may be used to cancel out the coupling variation of the 772D in a reflectometer setup by using the 773D to change the coupling for tracking purposes. -
Page 14: Specifications
Limits Comments 2.0 to 18 GHz Frequency range Maximum d irectivity For the 772D, this specification applies to the 2 to 12.4 GHz 30 dB test port only. Input port directivity is 24 dB @ 2 to 18 GHz. 12.4 to 18 GHz... - Page 15 APC-7 Coupled Type N (female) Output APC-7 Offset by 2.5 degrees by design Option 001 Type N (female) On all ports on both 772D and 773D 773D only Option 002 Input Type N (male) Coupled Type N (female) Output Type N (female)
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Page 16: Supplemental Characteristics
Table 3 Effective source match Frequency 772D 773D 0.1 to 2 GHz 1.06 1.05 2 to 12.4 GHz 1.13 1.12 2.4 GHz to 18 GHz 1.18 1.15 18 to 20 GHz 1.32 1.28 Keysight 772D and 773D Operating and Service Manual... -
Page 17: Voltage Incident On 772D Test Port And 773D Input
772D and 773D. COUPLING IN dB Figure 2 Voltage incident on 772D test port and 773D input Directivity The following graph depicts the 772D/773D typical changes in directivity over the frequency range. SPECIFICATIONS FREQUENCY IN GHz Figure 3 Directivity... -
Page 18: Calculating 772D Error
Calculating 772D error Analysis has shown the typical measurement error of the 772D to be: = A + BG + CG where: = error of swept-frequency measurement A = directivity of 772D B = effective source match + coupler directivity... - Page 19 Reflection (G Figure 5 772D error 2.0 to 12.4 GHz Reflection (G Figure 6 772D error 12.4 to 18.0 GHz Keysight 772D and 773D Operating and Service Manual...
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Page 20: Installation
Refer to Service and Support information in the front matter of this manual for the Keysight office nearest you. Attach a tag indicating the type of service required, return address, model number and serial number. Mark the container FRAGILE to insure careful handling. -
Page 21: Operating Information
Using the 772D dual directional coupler Figure 7 772D dual direction coupler Maximum power input is 50 W CW or 250 W peak. Greater power may damage the 772D. CAUTION 1 Connect the signal from the signal source to the INPUT connector. -
Page 22: Using The 773D Directional Coupler
20 dB from that flowing on the mainline in a forward direction (from INPUT to OUTPUT ports). Any voltage reflected from equipment connected to the OUTPUT port will be attenuated an additional amount equal to the directivity. Keysight 772D and 773D Operating and Service Manual... -
Page 23: Performance Tests
To account for frequency response errors and calibrate your test setup, perform the following procedure. Refer to Figure 9 for the test setup used for the performance tests. 1 Connect your 772D or 773D to the test equipment as shown in Figure 9. Set the test equipment controls as follows:... - Page 24 E = A + CG .(Refer to “Calculating 772D error” on page 18 in this manual) Figure 9 772D/773D performance test setup Keysight 772D and 773D Operating and Service Manual...
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Page 25: Directivity Test
1.80 2.90 0.80 1.80 3.10 0.90 1.85 3.20 1.00 1.90 3.30 1.10 1.90 3.50 1.20 2.00 10.0 3.60 1.30 2.00 12.0 4.00 1.40 2.10 14.0 4.30 1.40 2.10 16.0 4.60 1.50 2.30 Keysight 772D and 773D Operating and Service Manual... -
Page 26: Service Instructions
3 Push the connectors firmly together, and thread the coupling nut of the connector with retracted sleeve over the extended sleeve. 4 DO NOT tighten the other coupling nut since this will tend to loosen the electrical connection. Wider band Coupling sleeve Contacting surfaces Keysight 772D and 773D Operating and Service Manual... - Page 27 – Inspect and clean all surfaces that come in contact. – Do not connect to a damaged connector. Replace damaged connectors. – Turn only the connector nut (not the device) when making connection. Keysight 772D and 773D Operating and Service Manual...
- Page 28 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 772D and 773D Operating and Service Manual...
- Page 29 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2014 - 2019 Edition 3, September 26, 2019 Printed in Malaysia *00772-90001* 00772-90001 www.keysight.com...