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Agilent PXT Wireless Communications Test Set
User’s Guide
216
Power Spectrum Measurement
Key Path:
Mode > SA > LTE > UL Demodulation > Power Spectrum
Figure 6-15: Power Spectrum measurement
This measurement displays a frequency domain graphic of the subcarrier powers for a selected symbol,
and time domain graphics of the IQ signal over a radio frame. Additionally, the numeric results presented
by the Constellation measurement are also presented here.
The measurement can be used to measure the power of individual resource elements in the uplink
allocation.
Measurement Setup
Uplink Config
The green outlined box on the IQ time domain (Figure 6-10: Power Spectrum measurement
), above)
indicates the subframe being measured. Use the Target Subframe setting in the Uplink Config menu to
select the required subframe for this measurement.
Access the following settings by selecting the Meas Setup front-panel key.
The Symbol setting is the symbol index within the selected subframe. The selected symbol is indicated on
the IQ time domain screen by a blue outlined box.
The frequency domain graphic shows the subcarrier powers for the selected symbol. The Subcarrier
setting is used to move the marker on the frequency domain graphic. The marker result, power in dBm, is
displayed in the top right-hand corner of the frequency domain graphic. This is the power of the resource
element selected by symbol and subcarrier.
- Agilent PXT Wireless 1
- Communications Test Set 1
- (E6621A) 1
- Notices 2
- Table of Contents 5
- 1 Introduction 11
- General Specifications 12
- PXT Software Applications 13
- Latest Documentation 14
- 2 Front-panel and Menu Keys 15
- Amplitude 16
- RF1 Amplitude 17
- RF2 Amplitude 17
- RF1 Amplitude (RSTP) 18
- RF2 Amplitude (RSTP) 18
- Apply AWGN 19
- Signal to Noise Ratio (RF1) 20
- Signal to Noise Ratio (RF2) 20
- Noise Amplitude (RF1) 21
- Noise Amplitude (RF2) 21
- Atten – Key Menu 1 22
- CAUTION 22
- RF1 Ref Level 23
- RF2 Ref Level 23
- Attenuation 23
- RF1 Input Attenuation 25
- RF2 Input Attenuation 25
- Atten – Key Menu 2 26
- CONNECTED_ADJUSTER 27
- OVF_ADJUSTER 27
- Emulator Mode 27
- RF Setup 28
- RF Output Control 29
- RF DL Output 30
- RF1 Front Output 30
- RF2 Front Output 30
- Network Setup 31
- Netmask 32
- Gateway 32
- Remote Ctrl Setup 33
- Cell Setup 34
- External Sync 35
- SIB8 Force Sync 36
- Security Sync 36
- Amplitude Offsets 37
- Examples 39
- RF In/Out Offset 40
- RF1 Output Power Offset 41
- RF2 Output Power Offset 41
- General Config 42
- Freq – Key Menu 1 43
- Setting Method 44
- Center (DL) Freq 44
- Center (UL) Freq 44
- Center (UL/DL) Freq 45
- DL EARFCN 46
- UL EARFCN 47
- Freq – Key Menu 2 48
- Func - Key Menu 1 49
- Parameter (Key Menu 1) 50
- UDP Setting 51
- Transfer Mode 51
- Transfer Rate 52
- Payload Type 52
- UE Power Control 53
- Power Control Mode 54
- Power Adjust (Accumulated) 55
- Power Adjust (Absolute) 55
- Power Adjust (DCI3A) 56
- PUSCH Target Power 59
- PUCCH Target Power 59
- Power Adjust (All Up) 60
- Power Adjust (All Down) 60
- Frame Configuration 60
- Handover 61
- Handover Setup Mode 62
- Destination DL-Carrier Freq 62
- Destination UL-Carrier Freq 62
- Target Phys Cell Id 62
- UE Detach 63
- Custom Messages 64
- Message Name 65
- PDCCH Order 66
- OP.1/OP.2 67
- Func - Key Menu 2 68
- Other PHY CHs 69
- Statistical Throughput 70
- Test Start 71
- Test Stop 71
- Max Frame Size 71
- Confidence Level 72
- Statistical CQI Performance 73
- CQI Median 74
- Timing Advance 75
- Timing Advance Value 76
- Timing Advance Expiry Timer 76
- Func Setup 77
- Info (System Info) 79
- Management 80
- Meas (BSE Mode) 80
- Message 82
- L1/L2 Status 83
- BLER/Throughput 84
- Information 86
- Channel State Information 89
- RLC Information 91
- PDCP Information 92
- Meas Setup 93
- Display Interval 94
- Integ. BW 94
- Call Scenario 95
- Control Mode 96
- CH Bandwidth 96
- PHY Settings 98
- CFI (Normal SF) 99
- CFI (Special SF) 99
- UL Resource Allocation 100
- RB Size 101
- RB Start 101
- Ignore PRACHs 102
- Aggregation Level 102
- SPS Config 102
- Resource Allocation Mode 106
- CQI Reports 106
- I_MCS sf-control 107
- I_MCS 109
- Type0 Bitmap 111
- Subframe #5 Control 111
- Subframe #0 Control 112
- MIMO Setting 112
- MAC Settings 120
- RRC Settings – Key Menu 1 120
- Transmission Mode 121
- RRC Settings - Key Menu 2 123
- Connected DRX On/Off 124
- DRX-StartOffset 124
- RRC – Key Menu 3 126
- Connection Timer Status 127
- Connection Timer 127
- Inactivity Timer Status 127
- Additional Spectrum Emission 128
- NAS Settings 130
- TFT Handling 131
- 2 or 3 Digit MNC 132
- NAS Ciphering Algorithm 132
- IP Address Type 133
- V4 Address 134
- V6 Address 134
- DNS State 134
- DNS Address Type 135
- V4 DNS Address 135
- V6 DNS Address 135
- P-CSCF State 136
- P-CSCF Address Type 137
- V4 P-CSCF Address 137
- V6 P-CSCF Address 137
- Default EPS Bearer Config #2 138
- Default EPS Bearer Config #3 139
- Default EPS Bearer Config #4 139
- Security – Key Menu 1 140
- Security 141
- Authentication Algorithm 141
- Key Option 141
- K value 142
- OP value 143
- OPc value 143
- AMF value 143
- IMSI value 144
- Security – Key Menu 2 145
- Recall State 145
- Spectrum Analyzer 146
- Agilent VSA 146
- Real Time VSA 147
- Disconnect: 148
- VSA IP address: 148
- VSA Port: 148
- Start sending data: 148
- Stop sending data: 148
- Spectrum 149
- User’s Guide 151
- Indicators 153
- Scenario Information 153
- UE State 153
- Meas View 153
- Emulator Run/Stop 154
- EPC Setup 154
- Bindings 155
- Setup and Operation 156
- E2E Tests 157
- Downlink 162
- Uplink 162
- Parameter Descriptions 163
- License Requirements 165
- Controlling PXT in Live Mode 166
- Open the connection 170
- 5 Handovers 173
- Cell Selection 175
- Scenarios 175
- General Parameters 176
- Display / Logging 177
- Blind Handover 179
- PXT to PXT Handover 183
- Handover Test Steps 184
- Footnote: 185
- Performing Cell Reselections 187
- Mobile Originated CSFB 190
- Mobile Terminated CSFB 190
- Hardware Configuration 192
- Initial Software Setup 192
- PXT Scenario File 194
- SRVCC Test 195
- Phase 2 – SRVCC Execution 197
- SMS over SGs 198
- 6 RF Measurements 199
- Frequency 200
- Source Port Setup 200
- Source Level 201
- Receiver Port Setup 201
- Receiver Level 201
- Triggering 202
- Averaging 202
- Measurement Markers 203
- RF Measurement Setup 204
- General Purpose Measurements 205
- Channel Power Measurement 206
- Measurement Setup 207
- Uplink LTE Measurements 209
- Power vs. Time (FDD/TDD) 213
- Power vs. Time (TDD Example) 214
- Auto Config 218
- PXT Settings 219
- Scenario File Settings 220
- General Settings 220
- PUSCH Settings 221
- Reference Signal Settings 221
- Sounding RS Settings 222
- PRACH Settings 222
- Modulation Quality Summary 223
- Constellation Measurement 225
- Power Spectrum Measurement 226
- Received IQ Data Measurement 227
- Map Information Measurement 228
- Error Vector Measurement 229
- 7 Tips and Tricks 233
- UE Connection Manager Setup 234
- Firewalls 234
- Multiple Routes available 234
- High EVM observed 235
- 8 Troubleshooting 239
- Functional Check 240
- Calling Agilent Technologies 242
- Service and Support 243
- Web-based support 244
- E-mail support 244
- Phone support 244
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