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 38                                                                                                                                          Getting Started Guide

Troubleshooting
Where to get technical help

Where to get technical help

For online assistance: 

http://www.keysight.com/find/assist

To contact Keysight Technologies: 

http://www.keysight.com/find/contactus

Also, see 

“Locations for Keysight Technologies” on page 40

.

Identifying Problems

If the status indicator on the M1749A is not lit, or if it appears that mmWave 

signals are not being exchanged with the Device Under Test check the 

following: 

1.

Are the RF cables connected appropriately between the M1749A and the 

measurement instrument? (See 

Figure 2-1 on page 18

.)

2.

Is the M1749A powered on?

3.

Is the PXIe chassis (and its measurement instruments) powered on?

4.

Is the measurement application properly configured (for example, are the 

input and output ports selected appropriately for your test setup?).

If no obvious problem in the test setup can be found, contact Keysight 

Technologies to ask for technical support. 

No operator serviceable parts inside. Refer servicing to qualified personnel. To 

prevent electrical shock do not remove covers. 

Summary of Contents for M1749A

Page 1: ...Getting Started Guide Keysight mmWave Reference Solutions M1749A Performance mmWave Transceiver 22 7 49 GHz...

Page 2: ...ftware to U S government customers under its standard commercial license which is embodied in its End User License Agreement EULA a copy of which can be found at http www keysight com find sweula The...

Page 3: ...il subscribe to Keysight Email Updates at the following URL http www keysight com find MyKeysight Information on preventing instrument damage can be found at www keysight com find PreventingInstrument...

Page 4: ...4...

Page 5: ...Class A EMC declaration 11 Declaration of Conformity 11 Ventilation 12 Power requirements 13 Power requirements of the AC adapter 13 Using Accessories 13 Weight and Dimensions 14 Protecting against e...

Page 6: ...e Contents Signal Routing 33 Control 35 Troubleshooting 37 Where to get technical help 38 Identifying Problems 38 Returning the M1749A for Service 39 Calling Keysight Technologies 39 Locations for Key...

Page 7: ...is section Warning Statements and Symbols on page 8 Safety on page 9 Environmental Conditions Operating on page 10 EMC Electromagnetic Compatibility on page 11 Ventilation on page 12 Power requirement...

Page 8: ...practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated condition...

Page 9: ...the following standards dates and editions are cited in the Declaration of Conformity IEC EN 61010 1 Safe Installation Safety of any system incorporating this equipment is the responsibility of the as...

Page 10: ...this product have been type tested in accordance with the Keysight Environmental Test Manual and verified to be robust against the environmental stresses of Storage Transportation and End use those st...

Page 11: ...eclaration This equipment has been conformity assessed for use in business environments In a residential environment this equipment may cause radio interference Declaration of Conformity The Declarati...

Page 12: ...to block its ventilation openings Interfering with ventilation airflow can cause the transceiver to overheat Another area of concern is verification that the maximum ambient operating temperature of...

Page 13: ...power adapter and power cord which is supplied with the product See the accessories listed under Initial Inspection on page 20 Do not remove the DC input plug from the M1749A while it is in an active...

Page 14: ...rap before touching the center pin of any connector and before removing any assembly from the test set Be sure that all instruments are properly earth grounded to prevent build up of static charge Per...

Page 15: ...eir service life Inspect the mating surface each time a connection is made Metal particles from connector threads often find their way onto the mating surface when a connection is made or disconnected...

Page 16: ...be stored or left open in the area of the equipment Use isopropyl alcohol with adequate ventilation to prevent the combustions of fumes or vapors Avoid contact with eyes skin and clothing as isopropy...

Page 17: ...t Set M1749A Performance mmWave Transceiver Getting Started Guide 2 Quick Start The following topics can be found in this section Purpose and Function on page 18 Initial Inspection on page 20 Location...

Page 18: ...rom the DUT to the lower range of the test system s Rx input The DUT facing ports of the M1749A RF Tx Rx 1 and RF Tx Rx 2 are half duplex ports that is either port can transmit or receive although nev...

Page 19: ...ers this eliminates the need for the USB controller and trigger lines shown in the illustration The supplied AC DC adapter provides a 19 VDC power input to the M1749A this can also be done by a DC pow...

Page 20: ...e incomplete Contact the nearest Keysight Technologies office Keep the shipping materials for the carrier s inspection If you must return a test set to Keysight Technologies use the undamaged original...

Page 21: ...at heat given off by the transceiver will rise away from the DUT Leave a minimum clearance of 2 5 inches 7 cm around the transceiver Also ensure there is enough room to attach all necessary cables bet...

Page 22: ...22 Getting Started Guide Quick Start Location and Mounting...

Page 23: ...Set M1749A Performance mmWave Transceiver Getting Started Guide 3 Exterior Features The following topics can be found in this section DUT Facing Side on page 24 Instrument Facing Side on page 26 Labe...

Page 24: ...h below shows the DUT facing side of the M1749A Figure 3 1 M1749A DUT facing side The DUT facing ports are shown on the right in the block diagram below Figure 3 2 M1749A DUT facing ports on right The...

Page 25: ...rnal switching of the M1749A can be configured so that either port is the RF output from the Tx upconverter or the RF input to the Rx downconverter These ports communicate with the DUT through an over...

Page 26: ...ing Side Instrument Facing Side The photograph below shows the instrument facing side of the M1749A the block diagram shows the instrument facing RF ports on the left Figure 3 4 M1749A instrument faci...

Page 27: ...rovides USB connectivity with an external controller This is one of two methods of controlling the M1749A the other involves use of the Control port which incorporates trigger signals When the USB int...

Page 28: ...d coaxial jumper connects it to the M1749A R In port and should be left in place 12 T Out This 2 4 mm connector provides a signal which will be used as the LO input to the Transmitter downconverter A...

Page 29: ...or the user to refer to instructions in the documentation This symbol indicates that the power supply is protected throughout by double or reinforced insulation This symbol indicates that the power ou...

Page 30: ...cates separate collection for electrical and electronic equipment mandated under EU law as of August 13 2005 All electric and electronic equipment are required to be separated from normal waste for di...

Page 31: ...ss Test Set M1749A Performance mmWave Transceiver Getting Started Guide 4 Functionality The following topics can be found in this section Simplified Block Diagram on page 32 Signal Routing on page 33...

Page 32: ...Tx upconverter and Rx downconverter and how the upconverted and downconverted signals interface with the DUT facing ports of the test head the right side of the illustration Figure 4 1 M1749A block di...

Page 33: ...o the M1749A used in generating an LO input to the upconverter and downconverter Brown fixed 9 6 GHz input to the M1749A used in generating an LO input to the upconverter and downconverter Orange gene...

Page 34: ...llustration below the green transmit path can be routed either to RF Tx Rx 1 as in the upper picture or to RF Tx Rx 2 as in the lower picture Whichever port is not transmitting becomes the receiver th...

Page 35: ...generated by the wireless test system Configuration choices for the M1749A are made within the application interface of the test application which the test set is running For example if the output sou...

Page 36: ...36 Getting Started Guide Functionality Control...

Page 37: ...ess Test Set M1749A Performance mmWave Transceiver Getting Started Guide 5 Troubleshooting The following topics can be found in this section Identifying Problems on page 38 Returning the M1749A for Se...

Page 38: ...ice Under Test check the following 1 Are the RF cables connected appropriately between the M1749A and the measurement instrument See Figure 2 1 on page 18 2 Is the M1749A powered on 3 Is the PXIe chas...

Page 39: ...ht Technologies Keysight Technologies has offices around the world to provide you with complete support for the M1749A To obtain servicing information or to order replacement parts contact the nearest...

Page 40: ...acific Australia 1 800 629 485 China 800 810 0189 Hong Kong 800 938 693 India 1 800 112 929 Japan 0120 421 345 Korea 080 769 0800 Malaysia 1 800 888 848 Singapore 1 800 375 8100 Taiwan 0800 047 866 Ot...

Page 41: ...This information is subject to change without notice Keysight Technologies 2021 Edition 1 March 2021 M1749 90001 www keysight com...

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