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S:\HP892XX\USRGUIDE\manual\acpscrn.fb
Chapter 4, Adjacent Channel Power Screen
How the Test Set Measures Adjacent Channel Power (ACP)
How the Test Set Measures Adjacent Channel Power (ACP)
When you access this screen, the Test Set automatically starts a multi-step process
for measuring ACP:
1. AF Generator 1 is turned off if the
Carrier Ref
field is set to
Unmod
.
2. The amplitude of the center frequency (
Tune Freq
) is measured to establish a
reference.
3. AF Generator 1 is turned back on if it was previously turned off.
4. The power in each of the adjacent channels is analyzed.
5. Adjacent Channel Power is calculated and displayed. This value can be displayed as an
absolute power level or as a ratio referenced to the center frequency’s level.
Which Input Port to Use. The TX Power measurement is used to calculate absolute
Adjacent Channel Power. Since TX Power can only be measured using the RF IN/OUT
port, you must use this port to measure ACP Level. ACP Ratio can be measured using
either the RF IN/OUT or the ANT IN port.
Measuring ACP on AM Transmitters. When measuring AM signals, the reference level
must be measured on an unmodulated carrier; so the
Carrier Ref
field must be set to
Unmod
. After the reference is measured, the power in the adjacent channels must be mea-
sured with modulation. This requires the modulating signal to be turned off and on repeat-
edly as measurements are being calculated and displayed. Since the Test Set automatically
turns AFGen1 on and off when the
Carrier Ref
field is set to
Unmod
, you must use
AFGen1 and the AUDIO OUT port as the modulation source for making AM ACP mea-
surements.
Содержание 8920A
Страница 14: ...Contents 14 2 Configuring Your Test Set General Operating Information 50 ...
Страница 17: ...Contents 17 5 AF Analyzer Screen Block Diagram 100 ...
Страница 19: ...Contents 19 7 Configure Screen Field Descriptions 254 ...
Страница 21: ...Contents 21 9 Duplex Test Screen Block Diagram 340 Field Descriptions 341 ...
Страница 23: ...Contents 23 11 Help Screen Field Descriptions 436 ...
Страница 24: ...Contents 24 12 I O Configure Screen Field Descriptions 438 ...
Страница 25: ...Contents 25 13 Message Screen Field Descriptions 444 ...
Страница 26: ...Contents 26 14 Oscilloscope Screen Field Descriptions 446 Using the Oscilloscope 452 ...
Страница 27: ...Contents 27 15 Print Configure Screen Field Descriptions 454 ...
Страница 29: ...Contents 29 17 RF Analyzer Screen Block Diagram 472 Field Descriptions 473 ...
Страница 30: ...Contents 30 18 RF Generator Screen Block Diagram 484 Field Descriptions 485 ...
Страница 31: ...Contents 31 19 RX Test Screen Block Diagram 494 Field Descriptions 495 ...
Страница 32: ...Contents 32 20 Service Screen Field Descriptions 502 ...
Страница 33: ...Contents 33 21 Spectrum Analyzer Screen Field Descriptions 506 Using the Spectrum Analyzer 518 ...
Страница 35: ...Contents 35 23 TX Test Screen Block Diagram 550 Field Descriptions 551 ...
Страница 38: ...Contents 38 Index 619 ...
Страница 39: ...39 1 Get Started ...
Страница 52: ...52 S HP892XX USRGUIDE manual configts fb Chapter 2 Configuring Your Test Set General Operating Information ...
Страница 98: ...98 S HP892XX USRGUIDE manual acpscrn fb Chapter 4 Adjacent Channel Power Screen Field Descriptions ...
Страница 99: ...99 5 AF Analyzer Screen ...
Страница 113: ...113 6 Call Processing Subsystem ...
Страница 129: ...129 Chapter 6 Call Processing Subsystem The CALL CONTROL Screen Figure 20 AMPS CALL CONTROL Screen with Meas Selected ...
Страница 252: ...252 S HP892XX USRGUIDE manual callscrn fb Chapter 6 Call Processing Subsystem CALL CONFIGURE Screen ...
Страница 268: ...268 S HP892XX USRGUIDE manual confscrn fb Chapter 7 Configure Screen Field Descriptions ...
Страница 269: ...269 8 Signaling Decoder Screen ...
Страница 338: ...338 S HP892XX USRGUIDE manual decoscrn fb Chapter 8 Signaling Decoder Screen Tone Sequence Decoder ...
Страница 339: ...339 9 Duplex Test Screen ...
Страница 353: ...353 10 Signaling Encoder AF Generator 2 ...
Страница 435: ...435 11 Help Screen ...
Страница 437: ...437 12 I O Configure Screen ...
Страница 443: ...443 13 Message Screen ...
Страница 445: ...445 14 Oscilloscope Screen ...
Страница 456: ...456 S HP892XX USRGUIDE manual prinscrn fb Chapter 15 Print Configure Screen Field Descriptions ...
Страница 471: ...471 17 RF Analyzer Screen ...
Страница 482: ...482 S HP892XX USRGUIDE manual rfanscrn fb Chapter 17 RF Analyzer Screen Field Descriptions ...
Страница 483: ...483 18 RF Generator Screen ...
Страница 492: ...492 S HP892XX USRGUIDE manual rfgscrn fb Chapter 18 RF Generator Screen Field Descriptions ...
Страница 493: ...493 19 RX Test Screen ...
Страница 504: ...504 S HP892XX USRGUIDE manual servscrn fb Chapter 20 Service Screen Field Descriptions ...
Страница 519: ...519 22 Tests Screen ...
Страница 548: ...548 S HP892XX USRGUIDE manual testscrn fb Chapter 22 Tests Screen ROM Programs ...
Страница 549: ...549 23 TX Test Screen ...
Страница 551: ...551 Chapter 23 TX Test Screen Field Descriptions Field Descriptions Figure 145 The TX Test Screen txscrn wmf ...
Страница 561: ...561 24 Connector Key and Knob Descriptions ...
Страница 585: ...585 25 Modifications Accessories Manuals Support ...
Страница 605: ...605 Error Messages ...
Страница 618: ...618 S HP892XX USRGUIDE manual errormsg fb Error Messages ...