RF Communications Test Set, Application Handbook

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Measurement Guideline 1 Measurement Guideline 1 Connector Considerations CAUTION: The RF present at any Test Set input connector must not exceed the specified level or permanent instrument damage may result. If necessary, use an external attenuator. If overpower occurs, disconnect the Transmitter, then cycle Test Set power OFF/ON to reset the protection circuitry. 44 RF IN/OUT The RF present at the Test Set RF IN/OUT connector must not exceed 60W continuous (or 100 Watts for 10 sec/minute) or permanent instrument damage may result. ANT IN The RF present at the Test Set ANT IN connector must not exceed 200 mW or permanent instrument damage may result.
Measurement Guideline 2 Cabling and Adapter Considerations Measurement Guideline 2 For most FM, AM, and SSB measurements, only the standard Test Set with correct interconnecting cables and adapters are required. Output Power If output power is greater than 60W (continuous), an external attenuator is also required. Any other additional equipment or Test Set options that are required to perform the measurement are listed in the procedure. Cabling Test Loads When measuring audio output, a Test Load with a resistance value dependent on the Receiver’s output impedance (normally 8 Ω) is required. In most cases, a non-inductive resistor with a power rating sufficient for the Receiver’s rated output power and resistance that matches the speaker impedance can be used. Typically, the test load is connected at the Test Set AUDIO IN connector using a BNC to dual banana adapter. Spectrum Analyzer For Spectrum Analyzer measurements, the Spectrum Analyzer/ Tracking Generator option (002) must be installed in the Test Set. Oscilloscope For Oscilloscope Measurements, Hewlett-Packard’s HP 104XX series passive Oscilloscope probes can be used to input signals to the Oscilloscope via the front panel Audio Input or rear panel MODULATION INPUT connectors. 45
Page 1 and 2: HP 8920A & HP 8920B RF Communicatio
Page 3 and 4: Manufacturer’s Declaration Herste
Page 5 and 6: CAUTION A CAUTION note denotes a ha
Page 7 and 8: LIMITATION OF WARRANTY EXCLUSIVE RE
Page 9 and 10: In this Book This book is a guide f
Page 11 and 12: Contents 1 Getting Started With The
Page 13 and 14: Contents 3 Testing FM Radios Introd
Page 15 and 16: Contents 5 Testing SSB Radios Intro
Page 17 and 18: Contents 7 Oscilloscope Measurement
Page 19 and 20: Contents 9 References Manuals 250 A
Page 21 and 22: Contents 11 HP 8920B Specifications
Page 23 and 24: 1 Getting Started With The Test Set
Page 25 and 26: Product Description Product Descrip
Page 27 and 28: Specifications Product Description
Page 29 and 30: The Test’s Sets Front-Panel Featu
Page 31 and 32: Screens that Require an Option The
Page 33 and 34: Data Function Keys USER K1 k1 K2 k2
Page 35 and 36: Screen Control Keys SCREEN CONTROL
Page 37 and 38: Data Keys USER DATA FUNCTIONS DATA
Page 39 and 40: POWER FF ON RF IN/OUT Non-Bracketed
Page 41 and 42: The Test Set’s Features • EXT S
Page 43: 2 Measurements Considerations The f
Page 47 and 48: Measurement Guideline 3 internal sp
Page 49 and 50: 3 Testing FM Radios 49
Page 51 and 52: List of Tests List of Tests FM Tran
Page 53 and 54: FM Transmitters FM Off The Air Moni
Page 55 and 56: Once the desired carrier is found:
Page 57 and 58: Test Set Options Required Measureme
Page 59 and 60: FM Deviation and Symmetry Measureme
Page 61 and 62: 9 Record the displayed FM Deviation
Page 63 and 64: Special Test Considerations See "In
Page 65 and 66: FM CTCSS Encoder Frequency and Devi
Page 67 and 68: FM CDCSS Coding and Deviation Measu
Page 69 and 70: FM Transmitters NOTE: Because frami
Page 71 and 72: Test Set Options Required Additiona
Page 73 and 74: To Measure deviation of the DTMF on
Page 75 and 76: Measurement Procedure: 1 Connect th
Page 77 and 78: Test Set Options Required Special T
Page 79 and 80: FM Receivers FM Receivers The follo
Page 81 and 82: Additional Equipment Required Measu
Page 83 and 84: FM Receivers FM SINAD, Receiver Cen
Page 85 and 86: FM Receivers Refer to the audio out
Page 87 and 88: FM Variation Of Sensitivity With Si
Page 89 and 90: On the Radio set the Receiver’s C
Page 91 and 92: FM 20 dB Quieting Sensitivity Measu
Page 93 and 94: On the Radio set the Receiver’s C
Page 95 and 96:
Special Test Considerations See "Co
Page 97 and 98:
FM CTCSS Sensitivity and Bandwidth
Page 99 and 100:
On the Radio set the Receiver’s C
Page 101 and 102:
FM CDCSS Sensitivity Measurement 50
Page 103 and 104:
Once the Sending: 13 Press the PREV
Page 105 and 106:
FM Audio Frequency Response Measure
Page 107 and 108:
On the Test Set using the knob and
Page 109 and 110:
Additional Equipment Required Speci
Page 111 and 112:
FM Spurious Response Attenuation Me
Page 113 and 114:
Page 115 and 116:
4 Testing AM Radios 115
Page 117 and 118:
List of Tests List of Tests AM Tran
Page 119 and 120:
AM Transmitters AM Off The Air Moni
Page 121 and 122:
Once the desired carrier is found:
Page 123 and 124:
Test Set Options Required Measureme
Page 125 and 126:
AM Microphone Sensitivity and Modul
Page 127 and 128:
TX Frequency TX Power Tune Mode Aut
Page 129 and 130:
Measurement Procedure: 1. Connect t
Page 131 and 132:
Test Set Options Required Spectrum
Page 133 and 134:
AM Envelope Display Measurement POW
Page 135 and 136:
Page 137 and 138:
AM Audio Output Power Measurement 5
Page 139 and 140:
Page 141 and 142:
Additional Equipment Required Measu
Page 143 and 144:
AM AGC Measurement 50Ω COXIAL CABL
Page 145 and 146:
AM Receivers 17. Decrease the recei
Page 147 and 148:
Page 149 and 150:
AM Audio Frequency Response Measure
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
AM Spurious Response Attenuation Me
Page 157 and 158:
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5 Testing SSB Radios 159
Page 161 and 162:
List of Tests List of Tests SSB Tra
Page 163 and 164:
SSB Frequency or Frequency Error Me
Page 165 and 166:
Frequency Frequency Output Power On
Page 167 and 168:
Test Set Options Required Special T
Page 169 and 170:
SSB Transmitters NOTE: Test set up
Page 171 and 172:
Test Set Options Required Special T
Page 173 and 174:
SSB Receivers SSB Receivers The fol
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
21. Set Amplitude to −137 dBm and
Page 187 and 188:
6 Spectrum Analyzer Measurements 18
Page 189 and 190:
List of Measurements List of Measur
Page 191 and 192:
Measuring Transmitter High/Low Powe
Page 193 and 194:
Using the Spectrum Analyzer Measure
Page 195 and 196:
Using the Spectrum Analyzer Measure
Page 197 and 198:
Test Set Options Required Additiona
Page 199 and 200:
Calculate the Field Strength: 13 Ca
Page 201 and 202:
Page 203 and 204:
Determine Distortion Products: Usin
Page 205 and 206:
Using the Tracking Generator Using
Page 207 and 208:
Test Set Options Required Using the
Page 209 and 210:
Using the Tracking Generator Measur
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Using the Tracking Generator 13. Fo
Page 223 and 224:
Page 225 and 226:
50 Ω Load Output Return Loss Bridg
Page 227 and 228:
Calculate the Return Loss in VSWR:
Page 229 and 230:
Additional Equipment Required Speci
Page 231 and 232:
Page 233 and 234:
7 Oscilloscope Measurements 233
Page 235 and 236:
Using the Oscilloscope The built-in
Page 237 and 238:
Using the Oscilloscope to the RF IN
Page 239 and 240:
Using the Oscilloscope Measurement
Page 241 and 242:
The Delta marker function is perfor
Page 243 and 244:
8 Configuring for Measurements This
Page 245 and 246:
CABLING RESTRICTIONS Preparing the
Page 247 and 248:
Preparing the Test Set for DC Opera
Page 249 and 250:
9 References This chapter contains
Page 251 and 252:
Application Note Application Note
Page 253 and 254:
10 HP 8920A Specifications 253
Page 255 and 256:
Signal Generator Specifications RF
Page 257 and 258:
Spectral Purity Table 2 Table 3 Spu
Page 259 and 260:
AM Frequency Range: 1.5 to 1000 MHz
Page 261 and 262:
Audio Source Specifications Frequen
Page 263 and 264:
RF Frequency Measurement Measuremen
Page 265 and 266:
AM Measurement Frequency Range: 10
Page 267 and 268:
TDMA Analyzer (HP 8920D or 8920A wi
Page 269 and 270:
AF Analyzer Specifications Distorti
Page 271 and 272:
Oscilloscope Specifications Frequen
Page 273 and 274:
Tracking Generator (Included with O
Page 275 and 276:
Table 6 Channel Offset Resolution B
Page 277 and 278:
DC Current Meter (Option 103) Measu
Page 279 and 280:
Reference Oscillator Specifications
Page 281 and 282:
General Specifications Size: 7.5 H
Page 283 and 284:
11 HP 8920B Specifications Specific
Page 285 and 286:
Signal Generator Specifications RF
Page 287 and 288:
Spectral Purity Spurious Signals: S
Page 289 and 290:
AM Frequency Range: 1.5 to 1000 MHz
Page 291 and 292:
Audio Source Specifications Frequen
Page 293 and 294:
RF Frequency Measurement Measuremen
Page 295 and 296:
AM Measurement SSB Measurement Freq
Page 297 and 298:
AF Analyzer Specifications Frequenc
Page 299 and 300:
Audio Filters Standard < 20 Hz HPF
Page 301 and 302:
Spectrum Analyzer Specifications (O
Page 303 and 304:
Table 9 Absolute Level Measurements
Page 305 and 306:
DC Current Meter Measurement Range:
Page 307 and 308:
Memory Card Specifications Memory C
Page 309 and 310:
General Specifications Size: 7.5 H
Page 311 and 312:
Glossary TERMS- Access- Accessing a
Page 313 and 314:
Index Numerics 1/4 Wave Coaxial Tun
Page 315 and 316:
Index Frequency Measurement, 87, 14
Page 317 and 318:
Index P Passive Cavity Insertion Lo
Page 319:
Index V Variation Of Sensitivity Wi
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RF Communications Test Set, Application Handbook

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