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11 Occupied Bandwidth Measurement
Trace/Detector
•
Normal–the detector determines the peak of the CW-like signals, and it yields alternating maximums
and minimums of noise-like signals. This is also referred to as Rosenfell detection.
•
Average–the detector determines the average of the signal within the sweep points. The averaging
method depends upon the Average Type selection (voltage, power or log scales).
•
Peak (Positive)–the detector determines the maximum of the signal within the sweep points.
•
Sample–the detector indicates the instantaneous level of the signal at the center of the sweep points
represented by each display point.
•
Negative Peak–the detector determines the minimum of the signal within the sweep points.
Key Path
Detector
Initial S/W Revision
Prior to A.02.00
Auto
When the detector choice is Auto, the analyzer selects the detector. The selected detector depends on
marker functions, trace functions, and trace averaging functions for the current measurement.
Key Path
Trace/Detector
Remote Command
[:SENSe]:OBWidth:DETector:AUTO ON|OFF|1|0
[:SENSe]:OBWidth:DETector:AUTO?
Example
OBW:DET:AUTO ON
OBW:DET:AUTO?
Couplings
When Detector setting is “Auto” ([:SENSe]:OBWidth:DETector:AUTO?), Detector
([:SENSe]:OBWidth:DETector[:FUNCtion]?) switches aligning with the switch of this parameter:
“NORMal” with Clear Write, “AVERage” with AVERage, “POSitive (peak)” with MAXHold, and
“NEGative (peak)” with MINHold.
Preset
ON
ISDB-T: OFF
State Saved
Saved in instrument state.
Initial S/W Revision
Prior to A.02.00
Modified at S/W Revision
A.03.00
Detector Selection
Allows you to select a specific detector for the current measurement. When the detector choice is Auto,
the analyzer selects the detector. The selected detector depends on marker functions, trace functions,
and trace averaging functions for the current measurement.
Key Path
Trace/Detector
Mode
SA, WCDMA, C2K, WIMAX OFDMA, TD-SCDMA, 1xEVDO, ISDB-T, CMMB, LTE, LTETDD,
BLUETOOTH, WLAN, MSR
W-CDMA & HSPA Measurement Applications Reference
1601
Summary of Contents for E6640A
Page 80: ...Table of Contents lxxx W CDMA HSPA Measurement Applications Reference ...
Page 188: ...3 Programming the Test Set Common Commands 188 W CDMA HSPA Measurement Applications Reference ...
Page 256: ...5 Mode Functions Mode Setup 256 W CDMA HSPA Measurement Applications Reference ...
Page 324: ...6 System Functions System 324 W CDMA HSPA Measurement Applications Reference ...
Page 369: ...8 Channel Power Measurement Auto Couple W CDMA HSPA Measurement Applications Reference 369 ...
Page 389: ...8 Channel Power Measurement Marker W CDMA HSPA Measurement Applications Reference 389 ...
Page 664: ...9 ACP Measurement Auto Couple 664 W CDMA HSPA Measurement Applications Reference ...
Page 669: ...9 ACP Measurement BW W CDMA HSPA Measurement Applications Reference 669 ...
Page 984: ...9 ACP Measurement View Display 984 W CDMA HSPA Measurement Applications Reference ...
Page 1001: ...10 Spectrum Emission Mask Measurement W CDMA HSPA Measurement Applications Reference 1001 ...
Page 1668: ...12 Code Domain Measurement Auto Couple 1668 W CDMA HSPA Measurement Applications Reference ...
Page 2354: ...14 QPSK EVM Measurement 2354 W CDMA HSPA Measurement Applications Reference ...
Page 2364: ...14 QPSK EVM Measurement Auto Couple 2364 W CDMA HSPA Measurement Applications Reference ...