Keysight E6640A, Руководство пользователя и программиста по приложениям измерений

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10 Spectrum Emission Mask Measurement
Meas Setup
LTETDD, CMMB, Digital Cable TV, WLAN, LTEAFDD, LTEATDD
Remote Command [:SENSe]:SEMask:FREQuency[1]|2:SPAN <freq>
[:SENSe]:SEMask:FREQuency[1]|2:SPAN?
Example SEM:FREQ:SPAN 3MHz
SEM:FREQ:SPAN?
Notes Frequency sub op code, 1 is for BTS, 2 for MS. Default is BTS.
You must be in the mode that includes SEM measurement to use this command. Use
:INSTrument:SELect to set the mode.
Couplings Range 1 kHz to 50 MHz (although restricted by Integ BW). If you set the channel Span lower than
channel Integ BW, they will both track each other. As you increase the channel Span, the Integ BW
will also increase if it is less than 1/10 of the channel Span.
For WLAN 802.11ac (80 + 80 MHz), the channel span is coupled with the difference between the
center frequencies of the two carriers. When the difference is either less than 80 MHz or greater
than 565 MHz, a “setting conflict” error message is displayed.
Chan Span = Carrier S Chan IntegBW;
Preset SA: 5.0 MHz
WCDMA: 5.0 MHz|5.0 MHz
C2K: 1.25 MHz|1.25 MHz
WIMAX OFDMA: 10 MHz| 10 MHz
TD-SCDMA: 1.6 MHz|1.6 MHz
1xEVDO: 1.25 MHz
DTMB (CTTB): 10 MHz
DVB-T/H: 10 MHz
ISDB-T: 8 MHz
CMMB: 10 MHz
LTE: 5 MHz
LTETDD: 5 MHz
Digital Cable TV: 10 MHz
WLAN:
if Radio Std is 802.11a/g(OFDM/DSSS-OFDM)/802.11n(20 MHz)/ 802.11ac (20 MHz): 18 MHz
if Radio Std is 802.11b/g(DSSS/CCK/PBCC): 22 MHz
if Radio Std is 802.11n(40MHz)/ 802.11ac (40 MHz): 38 MHz
if Radio Std is 802.11ac (80 MHz): 78 MHz
if Radio Std is 802.11ac (160 MHz): 158 MHz
if Radio Std is 802.11ac (80 MHz + 80 MHz): 240 MHz
State Saved Saved in instrument state.
Min 1 kHz
Max 645 MHz
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.02.00, A.03.00
W-CDMA & HSPA Measurement Applications Reference 1057