Anritsu MP1763C SECTION 8 TROUBLESHOOTING AND REPAIR

8-1

SECTION 8TROUBLESHOOTING AND REPAIR

8.1 Before Considering Trouble

If the instrument is not operating properly for some reason, check it as follows:

• Power is not turned on

Is the power cord loose ? →Plug in firmly.

↓

Is the fuse blown ? →Replace the fuse.

• Synchronization is not established.

Are the transmit and receive interfaces the same ? →Check the set values and set them to the correct values.

(Termination conditions, output level, offset, etc.)

↓

Is the connection cable normal ? →Change the cable.

↓

Initialize the instrument. (Transmitter and receiver)

Set the receiver the same as the transmitter.

• Error added

Is the cable loose ? →Retighten the connector.

↓

Is Error addition OFF ? →Set Error addition to OFF.

↓

Are the phase margin and bias margin sufficient? →Adjust so that the phase and offset are suitably cut.

• The output waveform is distorted.

Is the cable loose ? →Retighten the connector.

↓

Is the CLOCK1 outputs terminated ? →use the attached cable to connect the outputs to the

↓DUMMY terminal.

Are cables and connectors that have good high →Use cables and connectors that have good high fre-

frequency characteristics being used ? quency characteristics.

Contents

Main ii Safety Symbols Symbols used in manual Safety Symbols Used on Equipment and in Manual DANGER WARNING CAUTION iii iv v vi vii Equipment Certificate Anritsu Warranty Anritsu Corporation Contact viii Notes On Export Management Lifetime of Parts FOR CALIFORNIA USA ONLY Page x CE Conformity Marking CE marking 1. Product Model 2. Applied Directive 3. Applied Standards C-tick Conformity Marking xii Power Line Fuse Protection I Composition of MP1763C Operation Manuals II Title of Contents SECTION 3 DESCRIPTION OF PANELS AND CONNECTORS ............................. 3-1 SECTION 4 OPERATING INSTRUCTIONS ............................................................... 4-1 Page Page Page 1-2 1.2 Specifications 1-3 whichever is larger 1-4 1-5 1-6 Section 1 GENERAL 1-7 * When OPTION 03 is installed, there is no 1/8 output. 1-8 1.3 Composition 2-1 SECTION 2 PREPARATIONS 2.1 Environmental Conditions of Installation Site 2.2 Safety Measures 2-2 2.3 Power Connection 2.3.1 Power Requirements 2.3.2 Connecting the Power Cord 2-3 2.4 Damage Prevention Measures Page Page Section 3 DESCRIPTION OF PANELS AND CONNECTORS PULSE PATTERN GENERATOR MP1763C 0.05 - 12.5GHz INTERNAL CLOCK (OPTION.01) PATTERN MEMORY 3.1 FRONT PANEL 3-2 3-3 3-4 3.2 REAR PANEL Section 3 DESCRIPTION OF PANELS AND CONNECTORS !! Nameplate 3-5 Page Page 4-2 4-3 4.2 Generation Pattern Setting 4-4 4.2.1 Logic modification 4.2.2 Alternate pattern setting 4-5 4-6 4.2.3 DATA pattern setting 4-7 4.2.4 ZERO SUBSTITUTION 4-8 4.2.5 Pseudo random pattern setting 4-9 4.2.6 ERROR addition 4-10 4.2.7 Tracking 4-11 4.2.8 Pattern SYNC. position 4-12 4-13 4.3 Output Interface 4-14 4.3.1 DUMMY terminal voltage switching 4-15 4.3.2 Amplitude, offset, and delay setting 4-16 The output waveform is as follows for any of the above three settings: OFFSEET 2 V If VOH is changed to VTH: OFFSEET 1.5 V 4-17 4.3.3 Duty adjustment 4.3.4 Cross point adjustment 4-18 4.3.5 Offset voltage setting range Page Page Page Page 4-23 4.4.1 File save 4-24 4.4.2 File recall 4.4.3 Disk formatting 4-25 4.4.4 File deletion 4.4.5 Error messages 4-26 4.4.6 Floppy disk 4.4.7 Floppy disk precautions 4-27 4.5 Parameters initialization 4-28 4.6 Functions of the FUNCTION Switch 5-1 SECTION 5 PRINCIPLES OF OPERATION 5.1 Pseudorandom Pattern (PRBS Pattern) 5-2 1 2 3 4 5 6 5-3 5.2 Pattern Synchronized Output Period 5.2.1 Pseudorandom pattern 5.2.2 Programmable pattern 5-4 5.3 Bit shift for Alternate A/B select timing 6-1 SECTION 6 PERFORMANCE TEST MEMORY MEMORY 6.1 Test Equipment 6.2 Error Measurement 6-2 Section 6 PERFORMANCE TEST MEMORY 6.3 Test Method Output DATA amplitude 0.5 Vp-p offset 0 Vp-p CLOCK amplitude 0.5 Vp-p offset 0.0 V Delay 0 ps 6-3 6.5 Check Items Check the 1/8 SPEED output with the connection shown at the below. !! Check all the outputs with the connections DATA1 DATA2 - - - DATA8. Fig. 6.3-2 Connection of rear panel Page 7-1 SECTION 7 MAINTENANCE 7.1 Daily Maintenance 7.2 Storage Precautions 7.3 Transportation Page 8-1 SECTION 8 TROUBLESHOOTING AND REPAIR 8.1 Before Considering Trouble Page A-1 APPENDIX A PERFORMANCE TEST REPORT SHEET Page INDEX-1 INDEX