The information contained in this document is subject to change
without notice.
Agilent Technologies, Inc. makes no warranty of any kind with regard
to this material, including but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Agilent
Technologies, Inc. shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the furnishing,
performance, or use of this material.
Programming Commands Cross References
Functional Index to SCPI Subsection
Functional Index to SCPI Subsection
The following table lists the SCPI subsystems or subsections associated
with the instrument cdmaOne function categories. The commands
listed are for cdmaOne specific functions. These commands are
documented in Chapter 2 , “Language Reference.” If you require
information on the commands for the Agilent ESA Spectrum Analyzers,
refer to the Agilent ESA Spectrum Analyzers Programmer’s Guide.
These commands are only available when the GSM mode has been
selected using INSTrument:SELect. If GSM mode is selected,
commands that are unique to another mode are not available.
2-1
Language Reference
CALCulate Subsystem
CALCulate Subsystem
This subsystem is used to perform post-acquisition data processing. In
effect, the collection of new data triggers the CALCulate subsystem. In
this instrument, the primary functions in this subsystem are markers
and limits.
Out Of Band Spurious Emissions (OOBSpur):
Absolute Limits Commands
Use the commands in this section to change out of band spurious limits
to your own custom limits values.
The commands in this section are presented according to the following
devices: MS, BTS, UBTS1, UBTS2 and UBTS3.
Out Of Band Spurious Emissions Absolute Limits
Commands—MS
Set or query any of the MS related limits for the out of band spurious
measurement. Replace <standard> in the above command strings with
PGSM, EGSM, RGSM, DCS or PCS.
Table 2-1 shows how each <standard> is associated with a value that
must be indexed using a numeric between 1 and 7. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit.
Factory Preset
and *RST:Refer to Table 2-1.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
2-2Chapter2
Language Reference
CALCulate Subsystem
Table 2-1Out Of Band Spurious Absolute Limits Commands—MS:
Default Values
Standard
DetailsPGSMEGSMRGSMDCSPCS
For MS allocated:
<= 1000 kHz
For MS allocated:>
1000 kHz
For MS idle:
<= 1000 kHz
For MS idle:
> 1000 kHz
For MS idle:
GSM Tx band limit
(880 - 915 MHz)
For MS idle:
DCS Tx band limit
(1710 - 1785 MHz)
For MS idle:
PCS Tx Band
Limit
(1850 - 1910 MHz)
–36.0
(n=1)
–30.0
(n=2)
–57.0
(n=3)
–47.0
(n=4)
–59.0
(n=5)
–53.0
(n=6)
N/AN/AN/AN/A–53.0
–36.0
(n=1)
–30.0
(n=2)
–57.0
(n=3)
–47.0
(n=4)
–59.0
(n=5)
–53.0
(n=6)
–36.0
(n=1)
–30.0
(n=2)
–57.0
(n=3)
–47.0
(n=4)
–59.0
(n=5)
–53.0
(n=6)
–36.0
(n=1)
–30.0
(n=2)
–57.0
(n=3)
–47.0
(n=4)
–59.0
(n=5)
–53.0
(n=6)
–36.0
(n=1)
–30.0
(n=2)
–57.0
(n=3)
–47.0
(n=4)
(n=5)
N/A
N/A
Out Of Band Spurious Emissions Absolute Limits
Commands—BTS
Set or query any of the MS related limits for the out of band spurious
measurement. Replace <standard> in the above command strings with
PGSM, EGSM, RGSM, DCS or PCS.
Table 2-2 shows how each <standard> is associated with a value that
must be indexed using a numeric between 1 and 4. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit.
Factory Preset
and *RST:Limit values default to the PGSM/EGSM/RGSM/DCS
/PCS standards as shown in Table 2-2.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Chapter 22-3
Language Reference
CALCulate Subsystem
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-2Out Of Band Spurious Absolute Limits Commands—BTS:
Default Values
Standard
DetailsPGSMEGSMRGSMDCSPCS
<= 1000 kHz–36.0
(n=1)
> 1000 kHz–30.0
(n=2)
GSM Tx band limit
(921 - 960 MHz)
DCS Tx band limit
(1805 - 1880 MHz)
N/AN/AN/A–57.0
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
(n=3)
N/AN/A
–36.0
(n=1)
–30.0
(n=2)
N/A
Out Of Band Spurious Emissions Absolute Limits
Commands—UBTS1
Set or query any of the UBTS1 related limits for the out of band
spurious measurement. Replace <standard> in the above command
strings with PGSM, EGSM, RGSM, DCS or PCS.
Table 2-3 shows how each <standard> is associated with a value that
must be indexed using a numeric between 1 and 4. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit.
Factory Preset
and *RST:Limit values default to the PGSM/EGSM/RGSM/DCS
/PCS standards as shown in Table 2-3.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
2-4Chapter2
Language Reference
CALCulate Subsystem
Table 2-3Out Of Band Spurious Absolute Limits Commands—UBTS1:
Default Values
Standard
DetailsPGSMEGSMRGSMDCSPCS
<= 1000 kHz–36.0
(n=1)
> 1000 kHz–30.0
(n=2)
GSM Tx band limit
(921 - 960 MHz)
DCS Tx band limit
(1805 - 1880 MHz)
N/AN/AN/A–57.0
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
(n=3)
N/AN/A
–36.0
(n=1)
–30.0
(n=2)
N/A
Out Of Band Spurious Emissions Absolute Limits
Commands—UBTS2
Set or query any of the UBTS2 related limits for the out of band
spurious measurement. Replace <standard> in the above command
strings with PGSM, EGSM, RGSM, DCS or PCS.
Table 2-4 shows how each <standard> is associated with a value that
must be indexed using a numeric between 1 and 4. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit.
Factory Preset
and *RST:Limit values default to the PGSM/EGSM/RGSM/DCS
/PCS standards as shown in Table 2-4.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Chapter 22-5
Language Reference
CALCulate Subsystem
Table 2-4Out Of Band Spurious Absolute Limits Commands—UBTS2:
Default Values
Standard
DetailsPGSMEGSMRGSMDCSPCS
<= 1000 kHz–36.0
(n=1)
> 1000 kHz–30.0
(n=2)
GSM Tx band limit
(921 - 960 MHz)
DCS Tx band limit
(1805 - 1880 MHz)
N/AN/AN/A–57.0
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
(n=3)
N/AN/A
–36.0
(n=1)
–30.0
(n=2)
N/A
Out Of Band Spurious Emissions Absolute Limits
Commands—UBTS3
Set or query any of the UBTS3 related limits for the out of band
spurious measurement. Replace <standard> in the above command
strings with PGSM, EGSM, RGSM, DCS or PCS.
Table 2-5 shows how each <standard> is associated with a value that
must be indexed using a numeric between 1 and 4. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit.
Factory Preset
and *RST:Limit values default to the PGSM/EGSM/RGSM/DCS
/PCS standards as shown in Table 2-5.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
2-6Chapter2
Language Reference
CALCulate Subsystem
Table 2-5Out Of Band Spurious Absolute Limits Commands—UBTS3:
Default Values
Standard
DetailsPGSMEGSMRGSMDCSPCS
<= 1000 kHz–36.0
(n=1)
> 1000 kHz–30.0
(n=2)
GSM Tx band limit
(921 - 960 MHz)
DCS Tx band limit
(1805 - 1880 MHz)
N/AN/AN/A–57.0
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
–47.0
(n=3)
–36.0
(n=1)
–30.0
(n=2)
(n=3)
N/AN/A
–36.0
(n=1)
–30.0
(n=2)
N/A
Chapter 22-7
Language Reference
CALCulate Subsystem
Output RF Spectrum (ORFS) Due To Modulation
Absolute Limits Commands
Use the commands in this section to change the output RF spectrum
absolute limits to your own custom limits values.
ORFS limits are generally specified in dB relative to the reference
power. This equates to the absolute power which the result must not
exceed. Standards documents also supply an absolute power level—
which the calculated relative limit (ref power – relative limit) must not
lie below—for each ORFS type, radio standard, device type and offset
frequency.
Therefore the relative limit applies if the calculated limit (ref power –
relative limit) is greater than the absolute limit. Otherwise the absolute
limit applies.
Example:
If relative limit = –75 dB and absolute limit = –65 dBm.
1.If the ref power is measured at 43 dBm, then:
Upper result limit due to relative limit = 43 – 75 = –32 dBm
Upper result limit due to absolute limit = –65 dBm
A relative limit of –32 dBm therefore applies.
2.If the ref power is measured at 0 dBm, then:
Upper result limit due to relative limit = 0 – 75 = –75 dBm
Upper result limit due to absolute limit = –65 dBm
An absolute limit of –65 dBm therefore applies.
The commands are presented according to the following devices: MS,
BTS, UBTS1, UBTS2 and UBTS3.
Set or query any of the absolute MS related limits for the ORFS due to
modulation measurement. Replace <standard> in the above command
strings with GSM, DCS or PCS. Note that GSM applies to all of PGSM,
EGSM and RGSM.
2-8Chapter2
Language Reference
CALCulate Subsystem
Table 2-6 below shows how each <standard> is associated with a value
that must be indexed using a numeric between 1 and 3. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit.
Example:
The following command sets the absolute result limit to –40 dBm
when testing a PGSM MS device at 1800 kHz offset (the default
value is –46.0 dBm):
Set or query any of the absolute BTS related limits for the ORFS due to
modulation measurement. Replace <standard> in the above command
strings with GSM, DCS or PCS. Note that GSM applies to all of PGSM,
EGSM and RGSM.
Chapter 22-9
Language Reference
CALCulate Subsystem
Table 2-7 below shows how each <standard> is associated with a value
that must be indexed using a numeric between 1 and 2. Replace n in the
above command strings with the appropriate numeric to set or query
the desired limit. For further information, refer to the example
provided earlier in this section for the ORFS Due To Modulation
Absolute Limits—MS command.
Factory Preset
and *RST:Refer to Table 2-7.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Set or query any of the absolute UBTS1 related limits for the ORFS due
to modulation measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Table 2-8 below shows how each <standard> is associated with a value
that must be indexed using the numeric 1. Replace n in the above
command strings with 1 to set or query the desired limit. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation Absolute Limits—MS command.
Factory Preset
and *RST:Refer to Table 2-8.
2-10Chapter2
Language Reference
CALCulate Subsystem
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Set or query any of the absolute UBTS2 related limits for the ORFS due
to modulation measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Table 2-9 below shows how each <standard> is associated with a value
that must be indexed using the numeric 1. Replace n in the above
command strings with 1 to set or query the desired limit. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation Absolute Limits—MS command.
Factory Preset
and *RST:Refer to Table 2-9.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Set or query any of the absolute UBTS3 related limits for the ORFS due
to modulation measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Table2-10 below shows how each <standard> is associated with a value
that must be indexed using the numeric 1. Replace n in the above
command strings with 1 to set or query the desired limit. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation Absolute Limits—MS command.
Factory Preset
and *RST:Refer to Table 2-10.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-10ORFS Due To Modulation Absolute
Limits—UBTS3: Default Values
Standard
DetailsGSMDCSPCS
>= 1800 kHz–69.0
(n=1)
2-12Chapter2
–67.0
(n=1)
–67.0
(n=1)
Language Reference
CALCulate Subsystem
Output RF Spectrum (ORFS) Due To Modulation
Relative Limits Commands
Use the commands in this section to change the output RF spectrum
relative limits to your own custom limits values.
ORFS limits are generally specified in dB relative to the reference
power. This equates to the absolute power which the result must not
exceed. Standards documents also supply an absolute power level—
which the calculated relative limit (ref power – relative limit) must not
lie below—for each ORFS type, radio standard, device type and offset
frequency.
Therefore the relative limit applies if the calculated limit (ref power –
relative limit) is greater than the absolute limit. Otherwise the absolute
limit applies.
Example:
If relative limit = –75 dB and absolute limit = –65 dBm.
1.If the ref power is measured at 43 dBm, then:
Upper result limit due to relative limit = 43 – 75 = –32 dBm
Upper result limit due to absolute limit = –65 dBm
A relative limit of –32 dBm therefore applies.
2.If the ref power is measured at 0 dBm, then:
Upper result limit due to relative limit = 0 – 75 = –75 dBm
Upper result limit due to absolute limit = –65 dBm
An absolute limit of –65 dBm therefore applies.
The commands are presented according to standards DCS, GSM and
PCS for devices MS, BTS and UBTS.
Table2-11 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency.
Chapter 22-13
Language Reference
CALCulate Subsystem
Set or query any of the absolute DCS relative MS related limits for the
ORFS due to modulation measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry.
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Example:
The following command sets the relative result limit to –65.0 dB
(the default value is –46.0 dB) when testing a DCS MS device at
400 kHz offset and total carrier power = 39 dBm:
Set or query any of the absolute DCS relative BTS related limits for the
ORFS due to modulation measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry.
Table2-12 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
+0.5
(n=2)
+0.5
(n=2)
–30
(n=3)
–30
(n=3)
–33
(n=4)
–33
(n=4)
–60
(n=5)
–60
(n=5)
–60
(n=6)
–60
(n=6)
–60
(n=7)
–60
(n=7)
–61
(n=8)
–59
(n=8)
–69
(n=9)
–67
(n=9)
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-12.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Chapter 22-15
Language Reference
CALCulate Subsystem
Table 2-12ORFS Due To Modulation DCS Relative Limits—BTS: Default
Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
Set or query any of the absolute DCS relative UBTS related limits for
the ORFS due to modulation measurement. Replace <Pnn> in the
above command strings with the appropriate Pnn entry.
+0.5
(n=2)
+0.5
(n=2)
+0.5
(n=2)
+0.5
(n=2)
+0.5
(n=2)
+0.5
(n=2)
–30
(n=3)
–30
(n=3)
–30
(n=3
–30
(n=3)
–30
(n=3)
–30
(n=3)
–33
(n=4)
–33
(n=4)
–33
(n=4)
–33
(n=4)
–33
(n=4)
–33
(n=4)
–60
(n=5)
–60
(n=5)
–60
(n=5)
–60
(n=5)
–60
(n=5)
–60
(n=5)
–70
(n=6)
–68
(n=6)
–66
(n=6)
–64
(n=6)
–62
(n=6)
–60
(n=6)
–73
(n=7)
–71
(n=7)
–69
(n=7)
–67
(n=7)
–65
(n=7)
–63
(n=7)
–75
(n=8)
–73
(n=8)
–71
(n=8)
–69
(n=8)
–67
(n=8)
–65
(n=8)
–80
(n=9)
–80
(n=9)
–80
(n=9)
–80
(n=9)
–80
(n=9)
–80
(n=9)
Table2-13 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-13.
2-16Chapter2
Language Reference
CALCulate Subsystem
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-13ORFS Due To Modulation DCS Relative Limits—UBTS:
Default Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
Set or query any of the absolute GSM relative MS related limits for the
ORFS due to modulation measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry.
Table2-14 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
+0.5
(n=2)
+0.5
(n=2)
–30
(n=3)
–30
(n=3)
–33
(n=4)
–33
(n=4)
–60
(n=5)
–60
(n=5)
–62
(n=6)
–60
(n=6)
–65
(n=7)
–63
(n=7)
–76
(n=8)
–76
(n=8)
–76
(n=9)
–76
(n=9)
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Chapter 22-17
Language Reference
CALCulate Subsystem
Factory Preset
and *RST:Refer to Table 2-14.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-14ORFS Due To Modulation GSM Relative Limits—MS: Default
Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
specified measurement resolution bandwidths. GSM900 MS
Set or query any of the absolute GSM relative BTS related limits for the
ORFS due to modulation measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry.
+0.5
(n=2)
+0.5
(n=2)
+0.5
(n=2)
+0.5
(n=2)
–30
(n=3)
–30
(n=3)
–30
(n=3)
–30
(n=3)
30 kHz RBW100 kHz RBW
–33
(n=4)
–33
(n=4)
–33
(n=4)
–33
(n=4)
–60
(n=5)
–60
(n=5)
–60
(n=5)
–60
(n=5)
–66
(n=6)
–64
(n=6)
–62
(n=6)
–60
(n=6)
–69
(n=7)
–67
(n=7)
–65
(n=7)
–63
(n=7)
–71
(n=8)
–69
(n=8)
–67
(n=8)
–65
(n=8)
–77
(n=9)
–75
(n=9)
–73
(n=9)
–71
(n=9)
Table2-15 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
2-18Chapter2
Language Reference
CALCulate Subsystem
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-15.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-15ORFS Due To Modulation GSM Relative Limits—BTS:
Default Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
Set or query any of the absolute GSM relative UBTS related limits for
the ORFS due to modulation measurement. Replace <Pnn> in the
above command strings with the appropriate Pnn entry.
Table2-16 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-16.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-16ORFS Due To Modulation GSM Relative Limits—UBTS:
Default Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
specified measurement resolution bandwidths. GSM900 MS
Set or query any of the absolute PCS relative MS related limits for the
ORFS due to modulation measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry.
Table2-17 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-17.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-17ORFS Due To Modulation PCS Relative Limits—MS:
Default Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
specified measurement resolution bandwidths. PCS1800 MS
PnnPower
Level
(dBm)
P33>33
Power
(n=1)
33
100200
+0.5
(n=2)
–30
(n=3)
250
30 kHz RBW100 kHz RBW
–33
(n=4)
400600 to
<1200
–60
(n=5)
(n=6)
–60
1200 to
<1800
–60
(n=7)
1800
to
<6000
–68
(n=8)
>6000
–76
(n=9)
P3232
32
(n=1)
+0.5
(n=2)
–30
(n=3)
–33
(n=4)
–60
(n=5)
–60
(n=6)
–60
(n=7)
–67
(n=8)
–75
(n=9)
Chapter 22-21
Language Reference
CALCulate Subsystem
Table 2-17ORFS Due To Modulation PCS Relative Limits—MS:
Set or query any of the absolute PCS relative BTS related limits for the
ORFS due to modulation measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry.
Table2-18 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-18.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
2-22Chapter2
Language Reference
CALCulate Subsystem
Table 2-18ORFS Due To Modulation PCS Relative Limits—BTS:
Default Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
Set or query any of the absolute PCS relative UBTS related limits for
the ORFS due to modulation measurement. Replace <Pnn> in the
above command strings with the appropriate Pnn entry.
Table2-19 below shows how each <Pnn> is associated with a value that
must be indexed using a numeric between 1 and 9. Replace n in the
above command strings with the appropriate numeric to set or query
the desired relative limit for the required offset frequency. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Modulation DCS Relative Limits—MS command.
Chapter 22-23
Language Reference
CALCulate Subsystem
NOTEThe relative limit applied depends on the measured total carrier power.
If the measured reference power lies between these discrete power
values noted in the specific table the limit value is linearly interpolated.
Factory Preset
and *RST:Refer to Table 2-19.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-19ORFS Due To Modulation PCS Relative Limits—UBTS:
Default Values
Maximum relative level (dB) at specific carrier offsets (kHz), using
Output RF Spectrum (ORFS) Due To Switching
Transients Absolute Limits Commands—BTS and
UBTS
Use the commands in this section to change the output RF spectrum
absolute limits to your own custom limits values.
ORFS limits are generally specified in dB relative to the reference
power. This equates to the absolute power which the result must not
exceed. Standards documents also supply an absolute power level—
which the calculated relative limit (ref power – relative limit) must not
lie below—for each ORFS type, radio standard, device type and offset
frequency.
Therefore the relative limit applies if the calculated limit (ref power –
relative limit) is greater than the absolute limit. Otherwise the absolute
limit applies.
Example:
If relative limit = –75 dB and absolute limit = –65 dBm.
1.If the ref power is measured at 43 dBm, then:
Upper result limit due to relative limit = 43 – 75 = –32 dBm
Upper result limit due to absolute limit = –65 dBm
A relative limit of –32 dBm therefore applies.
2.If the ref power is measured at 0 dBm, then:
Upper result limit due to relative limit = 0 – 75 = –75 dBm
Upper result limit due to absolute limit = –65 dBm
An absolute limit of –65 dBm therefore applies.
Note that for ORFS the above only applies to BTS and uBTS devices as
MS limits are specified in absolute terms (dBm) only.
The commands are presented according to devices BTS, UBTS1, UBTS2
and UBTS3.
Chapter 22-25
Language Reference
CALCulate Subsystem
ORFS Due To Switching Transients Absolute Limits—BTS
Set or query any of the absolute BTS related limits for the ORFS due to
switching transients measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Table 2-20 shows how each <standard> is associated with a value that
must be indexed using the numerics 1 or 2. Replace n in the above
command strings with the appropriate numeric to set or query the
desired limit.
Example:
The following command sets the absolute result limit to –40 dBm
when testing an E-GSM BTS device for offsets >= 1800 kHz (the
default value is –36.0 dBm):
Set or query any of the absolute UBTS1 related limits for the ORFS due
to switching transients measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Table 2-21 shows how each <standard> is associated with a value that
must be indexed using the numeric 1. Replace n in the above command
strings with 1 to set or query the desired limit. Forfurther information,
refer to the example provided earlier in this section for the ORFS Due
To Switching Transients Absolute Limits—BTS command.
Factory Preset
and *RST:Refer to Table 2-21.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-21ORFS Due To Switching Transients Absolute
Limits Commands—UBTS1: Default Values
Standard
DetailsGSMDCSPCS
>= 1800 kHz–36.0
(n=1)
–36.0
(n=1)
–36.0
(n=1)
ORFS Due To Switching Transients Absolute Limits—UBTS2
Set or query any of the absolute UBTS2 related limits for the ORFS due
to switching transients measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Chapter 22-27
Language Reference
CALCulate Subsystem
Table 2-22 shows how each <standard> is associated with a value that
must be indexed using the numeric 1. Replace n in the above command
strings with 1 to set or query the desired limit. Forfurther information,
refer to the example provided earlier in this section for the ORFS Due
To Switching Transients Absolute Limits—BTS command.
Factory Preset
and *RST:Refer to Table 2-22.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-22ORFS Due To Switching Transients Absolute
Limits Commands—UBTS2: Default Values
Standard
DetailsGSMDCSPCS
>= 1800 kHz–36.0
(n=1)
–36.0
(n=1)
–36.0
(n=1)
ORFS Due To Switching Transients Absolute Limits—UBTS3
Set or query any of the absolute UBTS2 related limits for the ORFS due
to switching transients measurement. Replace <standard> in the above
command strings with GSM, DCS or PCS. Note that GSM applies to all
of PGSM, EGSM and RGSM.
Table 2-23 shows how each <standard> is associated with a value that
must be indexed using the numeric 1. Replace n in the above command
strings with 1 to set or query the desired limit. Forfurther information,
refer to the example provided earlier in this section for the ORFS Due
To Switching Transients Absolute Limits—BTS command.
Factory Preset
and *RST:Refer to Table 2-23.
Range:–150 dBm to 150 dBm
Default Unit:dBm
2-28Chapter2
Language Reference
CALCulate Subsystem
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-23ORFS Due To Switching Transients Absolute
Limits Commands—UBTS3: Default Values
Standard
DetailsGSMDCSPCS
>= 1800 kHz–36.0
(n=1)
–36.0
(n=1)
–36.0
(n=1)
Chapter 22-29
Language Reference
CALCulate Subsystem
Output RF Spectrum (ORFS) Due To Switching
Transients Relative Limits Commands—BTS and
UBTS
Use the commands in this section to change the output RF spectrum
limits to your own custom limits values.
ORFS limits are generally specified in dB relative to the reference
power. This equates to the absolute power which the result must not
exceed. Standards documents also supply an absolute power level—
which the calculated relative limit (ref power – relative limit) must not
lie below—for each ORFS type, radio standard, device type and offset
frequency.
Therefore the relative limit applies if the calculated limit (ref power –
relative limit) is greater than the absolute limit. Otherwise the absolute
limit applies.
Example:
If relative limit = –75 dB and absolute limit = –65 dBm.
1.If the ref power is measured at 43 dBm, then:
Upper result limit due to relative limit = 43 – 75 = –32 dBm
Upper result limit due to absolute limit = –65 dBm
A relative limit of –32 dBm therefore applies.
2.If the ref power is measured at 0 dBm, then:
Upper result limit due to relative limit = 0 – 75 = –75 dBm
Upper result limit due to absolute limit = –65 dBm
An absolute limit of –65 dBm therefore applies.
Note that for ORFS due to switching transients the above only applies
to BTS and uBTS devices as MS limits are specified in absolute terms
(dBm) only.
ORFS Due To Switching Transients Relative Limits—GSM
Set or query any of the relative GSM related limits for the ORFS due to
switching transients measurement. Replace <device> in the above
command strings with the appropriate entry.
2-30Chapter2
Language Reference
CALCulate Subsystem
Table 2-24 shows how each <device> is associated with a value that
must be indexed using a numeric from 2 to 5. Replace n in the above
command strings with the appropriate numeric to set or query the
desired relative limit for the required offset frequency. Note that
entries in the Power column (n=1) are currently not used.
Example:
The following command sets the relative result limit to –70 dB (the
default value is –74.0 dB) when testing a GSM BTS device at 1200
kHz offset:
Set or query any of the relative DCS related limits for the ORFS due to
switching transients measurement. Replace <device> in the above
command strings with the appropriate entry.
Chapter 22-31
Language Reference
CALCulate Subsystem
Table 2-25 shows how each <device> is associated with a value that
must be indexed using a numeric from 2 to 5. Replace n in the above
command strings with the appropriate numeric to set or query the
desired relative limit for the required offset frequency. Note that entries
in the Power column (n=1) are currently not used. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Switching Transients Relative Limits—GSM command.
Factory Preset
and *RST:Refer to Table 2-25.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-25ORFS Due To Switching Transients Relative
Limits—DCS: Default Values
Offset Frequency (kHz)
DevicePower40060012001800
BTS0.0
(n=1)
UBTS0.0
(n=1)
–50dB
(n=2)
–50dB
(n=2)
–58dB
(n=3)
–58dB
(n=3)
–66dB
(n=4)
–66dB
(n=4)
–66dB
(n=5)
–66dB
(n=5)
ORFS Due To Switching Transients Relative Limits—PCS
Set or query any of the relative PCS related limits for the ORFS due to
switching transients measurement. Replace <device> in the above
command strings with the appropriate entry.
Table 2-25 shows how each <device> is associated with a value that
must be indexed using a numeric from 2 to 5. Replace n in the above
command strings with the appropriate numeric to set or query the
desired relative limit for the required offset frequency. Note that
entries in the Power column (n=1) are currently not used. For further
information, refer to the example provided earlier in this section for the
ORFS Due To Switching Transients Relative Limits—GSM command.
2-32Chapter2
Language Reference
CALCulate Subsystem
Factory Preset
and *RST:Refer to Table 2-25.
Range:–150 dB to 150 dB
Default Unit:dB
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Table 2-26ORFS Due To Switching Transients Relative
Limits—PCS: Default Values
Offset Frequency (kHz)
DevicePower40060012001800
BTS0.0
(n=1)
UBTS0.0
(n=1)
–50dB
(n=2)
–50dB
(n=2)
–58dB
(n=3)
–58dB
(n=3)
–66dB
(n=4)
–66dB
(n=4)
–66dB
(n=5)
–66dB
(n=5)
Chapter 22-33
Language Reference
CALCulate Subsystem
Output RF Spectrum (ORFS) Due To Switching
Transients Commands—MS
Use the commands in this section to change the output RF spectrum
limits for MS devices, to your own custom limits values. The output RF
spectrum test for MS devices, uses limits that are specified in absolute
units—that is, dBm.
Note that the limit applied—as shown in the table that accompanies
each command—depends on the total carrier power. If the measured
carrier power lies between these discrete power values, the limit value
is linearly interpolated. If it lies above or below the range specified, the
upper or lower limit set are used respectively.
Set or query any of the GSM MS related limits for the ORFS due to
switching transients measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry. The measured total
carrier power will determine which row of limits will be applied.
Table 2-27 shows how each <Pnn> is associated with a value that must
be indexed using a numeric from 1 to 5. Replace n in the above
command strings with the appropriate numeric to set or query the
desired relative limit for the required offset frequency. You can also
change the values in the Power column (n=1) to alter the carrier power
required for each set of limits.
Example 1:
The following command sets the result limit to –30.0 dBm (the
default value is –21.0 dBm) when testing a GSM MS device, total
carrier power 39 dBm, at 400 kHz offset:
Set or query any of the DCS MS related commands for the ORFS due to
switching transients measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry. The measured total
carrier power will determine which row of limits will be applied.
Table 2-28 shows how each <Pnn> is associated with a value that must
be indexed using a numeric from 1 to 5. Replace n in the above
command strings with the appropriate numeric to set or query the
desired relative limit for the required offset frequency. You can also
change the values in the Power column (n=1) to alter the carrier power
required for each set of limits. For further information, refer to the
examples provided earlier in this section for the
Transients GSM MS Limits command.
ORFS Due To Switching
Factory Preset
and *RST:Refer to Table 2-28.
Range:–150 dBm to 150 dBm
Chapter 22-35
Language Reference
CALCulate Subsystem
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:None: accessible via remote panel only.
Set or query any of the PCS MS related commands for the ORFS due to
switching transients measurement. Replace <Pnn> in the above
command strings with the appropriate Pnn entry. The measured total
carrier power will determine which row of limits will be applied.
Table 2-29 shows how each <Pnn> is associated with a value that must
be indexed using a numeric from 1 to 5. Replace n in the above
command strings with the appropriate numeric to set or query the
desired relative limit for the required offset frequency. You can also
change the values in the Power column (n=1) to alter the carrier power
required for each set of limits. For further information, refer to the
examples provided earlier in this section for the
Transients GSM MS Limits command.
ORFS Due To Switching
Factory Preset
and *RST:Refer to Table 2-29.
Range:–150 dBm to 150 dBm
Default Unit:dBm
Remarks:You must be in GSM mode to use this command. Use
INSTrument:SELect to set the mode.
2-36Chapter2
Language Reference
CALCulate Subsystem
Front Panel
Access:None: accessible via remote panel only.
Table 2-29ORFS Due To Switching Transients PCS MS
Limits: Default Values
Offset Frequency (kHz)
PnnPower
Level
(dBm)
3939
37<=37
Power
(dBm)
39.0
(n=1)
37.0
(n=1)
40060012001800
–23dBm
(n=2)
–23dBm
(n=2)
–26dBm
(n=3)
–26dBm
(n=3)
–32dBm
(n=4)
–32dBm
(n=4)
–36dBm
–36dBm
(n=5)
(n=5)
Chapter 22-37
Language Reference
CALCulate Subsystem
Phase and Frequency Error Measurement Limits
Commands
Selects whether the trigger system is continuously initiated or not. This
corresponds to continuous measurement or single measurement
operation.
When set to ON, at the completion of each trigger cycle, the trigger
system immediately initiates another trigger cycle.
When set to OFF, the trigger system remains in an “idle” state until
CONTinuous is set to ON or an INITiate[:IMMediate] command is
received. On receiving the INITiate{:IMMediate] command, it will go
through a single trigger cycle, and then return to the “idle” state.
Factory Preset: ON
*RST:ON (OFF recommended for remote operation)
Front Panel
Access:Meas Control, Measure Single Cont
Pause the Measurement
:INITiate:PAUSe
Pauses the current measurement by changing the current
measurement state from the “wait for trigger” state to the “paused”
state. If the measurement is not in the “wait for trigger” state, when the
command is issued, the transition will be made the next time that state
is entered as part of the trigger cycle. When in the pause state, the
spectrum analyzer auto-align process stops. If the analyzer is paused
for long a period of time, measurement accuracy may degrade.
Front Panel
Access:
Meas Control, Pause
Chapter 22-47
Language Reference
INITiate Subsystem
Restart the Measurement
:INITiate:RESTart
Restarts the current measurement regardless of its current operating
state. It is equivalent to:
INITiate[:IMMediate] (for single measurement mode)
ABort (for continuous measurement mode)
Front Panel
Access:
Restart
or
Meas Control, Restart
Resume the Measurement
:INITiate:RESume
Resumes the current measurement by changing the current
measurement state from the “paused state” back to the “wait for
trigger” state. If the measurement is not in the “paused” state, when
the command is issued, an error is reported.
Front Panel
Access:
Meas Control, Resume
2-48Chapter2
Language Reference
INSTrument Subsystem
INSTrument Subsystem
This subsystem includes commands for querying and selecting
instrument measurement (personality option) modes.
Select the measurement application by its instrument number. The
actual available choices depends upon which applications are installed
in the instrument. These instrument numbers can be identified with
INST:CATalog:FULL.
1=SA
3=GSM
4=cdmaOne
NOTEIf you are using the status bits and the analyzer mode is changed, the
status bits should be read, and any errors resolved, prior to switching
modes. Error conditions that exist prior to switching modes cannot be
detected using the condition registers after the mode change. This is
true unless they recur after the mode change, although transitions of
these conditions can be detected using the event registers.
Changing modes resets all SCPI status registers and mask registers to
their power-on defaults. Hence, any event or condition register masks
must be re-established after a mode change. Also note that the power
up status bit is set by any mode change, since that is the default state
after power up.
Factory Preset
and *RST:Persistent state with factory default of 1
Range:1 to x, where x depends upon which applications are
Select the measurement application by enumerated choice. The actual
available choices depends upon which applications (modes) are
installed in the instrument.
Once the instrument mode is selected, only the commands that are
valid for that mode can be executed. SYSTem:HELP:HEADers?
provides a list of the valid commands.
Spectrum Analyzer - No down-loadable software is being used.
CDMA mode - Makes cdmaOne (code division multiple access)
standard measurements.
GSM mode - Makes GSM (global system for mobile communications)
standard measurements.
NOTEIf you are using the status bits and the analyzer mode is changed, the
status bits should be read, and any errors resolved, prior to switching
modes. Error conditions that exist prior to switching modes cannot be
detected using the condition registers after the mode change. This is
true unless they recur after the mode change, although transitions of
these conditions can be detected using the event registers.
Changing modes resets all SCPI status registers and mask registers to
their power-on defaults. Hence, any event or condition register masks
must be re-established after a mode change. Also note that the power
up status bit is set by any mode change, since that is the default state
after power up.
Factory Preset
and *RST:Persistent state with factory default of Spectrum
Analyzer
Front Panel
Access:
Mode
2-50Chapter2
Language Reference
MEASure Group of Commands
MEASure Group of Commands
This group includes commands used to make measurements and return
results. The different commands can be used to provide fine control of
the overall measurement process. Most measurements should be done
in single measurement mode, rather than doing the measurement
continuously.
Each measurement sets the instrument state that is appropriate for
that measurement. Other commands are available for each
allow changing settings, view, limits, et cetera. Refer to:
This is a fast single-command way to make a measurement using the
factory default instrument settings. These are the settings and units
that conform to the Standard.
• Stops the current measurement and sets up the instrument for the
specified measurement using the factory defaults
• Initiates the data acquisition for the measurement
• Blocks other SCPI communication, waiting until the measurement is
complete before returning results.
• After the data is valid it returns the scalar results, or the trace data,
for the specified measurement.
If the optional [n] value is not included, or is set to 1, the scalar
measurement results will be returned. If the [n] value is set to a
value other than 1, the selected trace data results will be returned.
See each command for details of what types of scalar results or trace
data results are available.
If you need to change some of the measurement parameters from the
factory default settings you can set up the measurement with the
CONFigure command. Use the commands in the
SENSe:<measurement> and CALCulate:<measurement> subsystems
to change the settings. Then you can use the READ? command, or the
INITiate and FETCh? commands, to initiate the measurement and
query the results. See Figure 2-1.
Chapter 22-51
Language Reference
MEASure Group of Commands
If you need to repeatedly make a given measurement with settings
other than the factory defaults, you can use the commands in the
SENSe:<measurement> and CALCulate:<measurement> subsystems
to set up the measurement. Then use the READ? command or INITiate
and FETCh? commands, to initiate the measurement and query results.
Measurement settings persist if you initiate a different measurement
and then return to a previous one. Use READ:<measurement>? if you
want to use those persistent settings. If you want to go back to the
default settings, use MEASure:<measurement>?.
Figure 2-1Measurement Group of Commands
Configure Commands
:CONFigure:<measurement>
This command sets up the instrument for the specified measurement
using the factory default instrument settings and stops the current
measurement. It does not initiate the taking of measurement data.
The CONFigure? query returns the current measurement name.
Fetch Commands
:FETCh:<measurement>[n]?
This command puts valid data into the output buffer, but does not
initiate data acquisition. Use the INITiate[:IMMediate] command to
acquire data before you use the FETCh command. You can only fetch
results from the measurement that is currently selected.
2-52Chapter2
Language Reference
MEASure Group of Commands
If the optional [n] value is not included, or is set to 1, the scalar
measurement results will be returned. If the [n] value is set to a value
other than 1, the selected trace data results will be returned. See each
command for details of what types of scalar results or trace data results
are available. The binary data formats should be used for handling
large blocks of data since they are smaller and faster then the ASCII
format.
Read Commands
:READ:<measurement>[n]?
• Does not preset the measurement to the factory defaults. (The
MEASure? command does preset.) It uses the settings from the last
measurement.
• Initiates the measurement and puts valid data into the output
buffer. If a measurement other than the current one is specified, the
instrument will switch to that measurement before it initiates the
measurement and returns results.
• Blocks other SCPI communication, waiting until the measurement is
complete before returning the results
If the optional [n] value is not included, or is set to 1, the scalar
measurement results will be returned. If the [n] value is set to a
value other than 1, the selected trace data results will be returned.
See each command for details of what types of scalar results or trace
data results are available. The binary data formats should be used
when handling large blocks of data since they are smaller and faster
then the ASCII format.
Measurement settings persist if you initiate a different measurement
and then return to a previous one. Use READ:<measurement>? if you
want to use those persistent settings. If you want to go back to the
default settings, use MEASure:<measurement>?.
Chapter 22-53
Language Reference
MEASure Group of Commands
Cable Fault Location Measurement
Displays the reflected signal of a transmission line as a function of the
distance down the line. This complements the return loss
measurement: if a cable under test fails a return loss measurement, the
cable fault location measurement can be used to identify the location of
the fault. The measurement is particularly useful when a base station
and antenna are connected by a long length of cable
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the
SENSe:CFLocation commands for more measurement related
commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
nResults Returned
not specified or
n=1
2Returns the RF Envelope Trace (data array). This data array contains 401
Returns Seven scalar values:
1. Max Range
2. Marker Distance
3. Marker Amplitude
4. Marker Amplitude Coeff (rho)
5. Accuracy
6. Velocity Factor
7. Cable Loss
data points.
3Returns the FFT Trace (data array). This data array contains 401 data
points.
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MEASure Group of Commands
Monitor Band/Channel Measurement
Verified the GSM band and channels are free of interference by
measuring the spurious signals in the bands and channels specified by
the selected standard and tuning plan.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:MONitor
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
nResults Returned
not specified or
n=1
2Returns the RF Envelope Trace (data array). This data array contains 401
3Returns the Max Hold Trace (data array). This trace contains 401 data
Returns one scalar value:
Total Power (only for band meas)
data points.
points.
Chapter 22-55
Language Reference
MEASure Group of Commands
Out of Band Spurious Emissions Measurement
This measures the out of band spurious emissions relative to the
receive channel power in the selected channel. You must be in the GSM
or cdmaOne mode to use these commands. Use INSTrument:SELect to
set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:OOBSpur
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
nResults Returned
not specified or n=1Returns a list of spurious result values for each of the spurs found:
1. Frequency (a) Hz
2. Amplitude (a) dBm
3. Limit specification (a) dBm
4. Delta from limit (a) dB
Where a = 0 to number of spurs (variable).
2Returns the number of spurs found.
2-56Chapter2
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MEASure Group of Commands
Output RF Spectrum Measurement
This measures adjacent channel power. From 1 to 15 offsets can be
measured at one time. You must be in the GSM mode to use these
commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the
SENSe:ORFSpectrum commands for more measurement related
commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
The default settings for the MEASure command only measure the
carrier and 5 standard offsets. The default does not measure the
switching transients. If you use the CONFigure, INITiate, and FETCh
commands in place of the MEASure command, you can then use the
SENSe commands to change the settings from these defaults. Use
[:SENSe]:ORFSpectrum:LIST:SWITch CUSTom to select a customized
set of offsets. Use [:SENSe]:ORFSpectrum:TYPE MSWitching to
measure switching in addition to measuring modulation. The
measurement will take longer when measuring switching transients.
Chapter 22-57
Language Reference
MEASure Group of Commands
Measurement
nResults Returned
Method
Multiple offsetsnot
specified or
n=1
Returns a list of comma-separated values for the modulation
spectrum at all the offsets (lower and upper.) This is followed
by the switching transients results at all the offsets (lower and
upper). Note that the carrier is considered offset zero (0) and is
the first set of results sent. Four values are provided for each
of the offsets (including the carrier), in this order:
1. Negative offset(a) - power relative to carrier (dB)
2. Negative offset(a) - absolute average power (dBm)
3. Positive offset(a) - power relative to carrier (dB)
4. Positive offset(a) - absolute average power (dBm)
Values for all possible offsets are sent. Zeros are sent for
offsets that have not been defined. The total number of values
sent (120) = (4 results/offset) × (15 offsets) × (2 measurement
types – modulation & switching)
Carrier - modulation measurement values
Offset 1 - modulation measurement values and so on
Offset 14 - modulation measurement values
Carrier - switching transients measurement values
Offset 16 - switching transients measurement values
Offset 29 - switching transients measurement values and
so on
This measurement defaults to modulation measurements and
not switching measurements. If you want to return the
switching measurement values, you must change that default
condition and use FETCh or READ to return values, rather
than MEASure.
NOTE: When using custom modulation and switching offsets
the maximum number of measured values returned is:
Returns 4 comma-separated results for the specified offset:
specified or
n=1
1. Modulation spectrum power, dBc
2. Modulation spectrum power, dBm
3. Switching transient power, dBc
4. Switching transient power, dBm
Single offset2Returnsfloating point numbers (in dBm) of the captured trace
data. It contains 401 data points of the “spectrum due to
modulation” signal.
Single offset3Returnsfloating point numbers (in dBm) of the captured trace
data. It contains 401 points of the “spectrum due to switching
transients” signal.
2-58Chapter2
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MEASure Group of Commands
Measurement
Method
SweptNot
Swept2Returns floating point numbers (in dBm) of the captured trace
Swept3Returns floating point numbers (in dBm) of the captured trace
nResults Returned
Returns l boolean value: 1 if limits passed, 0 if limits failed.
specified,or
n=1
data. It contains 401 points of the “spectrum due to
modulation” signal.
data. It contains 401 points of the “spectrum due to switching
transients” signal.
Chapter 22-59
Language Reference
MEASure Group of Commands
Phase & Frequency Error Measurement
This measures the modulation quality of the transmitter by checking
phase and frequency accuracy. You must be in the GSM mode to use
these commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:PFERror
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
nResults Returned
0Returns a series of floating point numbers (in volts) that represent each
sample of the complete current time record raw I/Q vector trace length
scalar value (giving the total number of I/Q vector sample pairs = n/2).
The II/Q vector sample pair data is organized as:
I(0), Q(0),
I(1), Q(1),
------------I([n/2]–1), Q([n/2]–1)
The start of bit 0 (zero) of the useful part of the measured GSM burst within
the vector sample pairs is located at I(x/2), Q(x/2)
where x = raw I/Q vector trace index to burst.
2-60Chapter2
nResults Returned
Language Reference
MEASure Group of Commands
not specified or
n=1
Returns the following 15 scalar values:
1. RMS phase error is a floating point number (in degrees) of the rms
phase error between the measured phase and the ideal phase. The
calculation is based on symbol decision points and points halfway
between symbol decision points (that is 2 points/symbol). If averaging is
on, this is the average of the individual rms phase error measurements.
2. Peak phase error is a floating point number (in degrees) of the peak
phase error of all the individual symbol decision points (prior to the rms
averaging process). If averaging is on, this is the average of the
individual peak phase error measurements.
3. Peak phase symbol is a floating point number (in symbols)
representing the symbol number at which the peak phase error occurred.
Averaging does not affect this calculation.
4. Frequency error is a floating point number (in Hz) of the frequency
error in the measured signal. This is the difference between the
measured phase trajectory and the reference phase trajectory. If
averaging is on, this is the average of the individual frequency error
measurements.
5. I/Q origin offset is a floating point number (in dB) of the I and Q error
(magnitude squared) offset from the origin. If averaging is on, this is the
average of the individual IQ Offset measurements.
6. Trace phase sample is a floating point number (in units of bits)
representing the time between samples. It is used in querying phase
error vector traces.
7. Trace bit 0 decision offset is an integer number in units of sample
pairs for the sample points in an I/Q vector trace that represents the bit
0 (zero) decision point. The sample pairs in the trace are numbered
0 to N.
8. Trace sync start is an integer number in units of bits for the bit
number, within the data bits trace, that represents the start of the sync
word.
9. Trace time sample is a floating point number (in seconds) of the time
between samples. It is used in querying time domain traces. For the n=0
trace, of acquired I/Q pairs, this is the time between pairs.
10.Phase error trace length is an integer number (in units of samples)
representing the number of samples returned by the current phase error
trace and phase error with frequency trace.
11.RF envelope trace length is an integer number (in units of samples)
representing the number of samples returned by the current RF
envelope trace.
12.RF envelope trace index to burst is an integer number (in units of
samples) representing the trace sample which represents the start of bit
0 (zero) decision point of the useful part of the measured GSM burst.
Chapter 22-61
Language Reference
MEASure Group of Commands
nResults Returned
not specified or
n=1 (cont)
2Returns a series of floating point numbers (in degrees) that represent each
3Returns a series of floating point numbers (in degrees) that represent each
13. I/Q vector trace length is an integer number (in units of samples)
representing the number of samples returned by the current RF envelope
trace (ie this number divided by two represents the number of sample pairs
in the trace.)
14. Raw I/Q vector trace length is an integer number (in units of
samples) representing the number of samples returned by the current RF
envelope trace (ie this number divided by two represents the number of
sample pairs in the trace).
15. Raw I/Q vector trace index to burst is an integer number (in units of
samples) representing the trace sample which represents the start of bit 0
(zero) decision point of the useful part of the measured GSM burst.
sample of the current phase error trace data over the useful part of the
measured GSM burst. It contains n samples, where n = phase error trace
length scalar value. The first sample represents the start of bit 0 (zero) of
the useful part of the demodulated burst.
sample of the current phase error with frequency trace data over the useful
part of the measured GSM burst. Phase error with frequency is the error
vector between the measured phase (that has not had frequency
compensation) and the ideal reference phase. It contains n samples, where n
= phase error trace length scalar value. The first sample represents the
start of bit 0 (zero) of the useful part of the demodulated burst.
4Returns a series of floating point numbers (in dB relative to peak of signal)
that represent each sample of the complete current time record RF envelope
trace data. It contains n samples wheren=RFenvelope trace length scalar
value.
The start of bit 0 (zero) so the useful part of the measured GSM burst within
the sample time record is located at:
I(x), Q(x)
where x = RF envelope trace index to burst.
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MEASure Group of Commands
nResults Returned
5Returns a series of floating point numbers (with magnitudes normalized to
1) that represent each sample of the current correlated I/Q vector trace data
over the useful part of the measured GSM burst. It contains n samples
where n = I/Q vector trace length scalar value (giving the total number of
I/Q vector sample pairs = n/2.
The I/Q vector sample pair data is organized as:
I(0), Q(0),
I(1), Q(1),
-------------
I([n/2]–1), Q([n/2]–1)
The decision point pairs are located at:
I(d), Q(d)
I(d+10), Q(d+10)
I(d+20), Q(d+20)
and so on.
where d = trace bit 0 decision offset.
Chapter 22-63
Language Reference
MEASure Group of Commands
Power Steps Measurement
This measurement uses long sweep times to display the different power
steps resulting from adaptive power control. You must be in GSM mode
to use these commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:PSTeps
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
nResults Returned
not specified or
n=1
Returns 5 scalar values:
1. Power Difference is the relative difference in power (in dB) between
the two active marker positions.
2. Time Difference is the relative difference in time (in seconds) between
the two active marker positions.
3. Mean Carrier Power is the mean power (in dBm) of the trace data
between the two active marker positions.
4. Max Carrier Power is the maximum power (in dBm) of the trace data
between the two active marker positions.
5. Min Carrier Power is the minimum power (in dBm) of the trace data
between the two active marker positions.
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MEASure Group of Commands
Power vs. Time Measurement
This measures the average power during the “useful part” of the burst
comparing the power ramp to required timing mask. You must be in
GSM or Service mode to use these commands. Use INSTrument:SELect
to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:PVTime
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Chapter 22-65
Language Reference
MEASure Group of Commands
Measurement Results Available
nResults Returned
not specified or
n=1
Returns the following comma-separated scalar results:
1. Sample time is a floating point number that represents the time
between samples when using the trace queries (n=0, 2, et cetera).
2. Power of single burst is the mean power (in dBm) across the useful
part of the selected burst in the most recently acquired data, or in the
last data acquired at the end of a set of averages. If averaging is on, the
power is for the last burst.
3. Power averaged is the power (in dBm) of N averaged bursts, if
averaging is on. The power is averaged across the useful part of the
burst. Average m is a single burst from the acquired trace. If there are
multiple bursts in the acquired trace, only one burst is used for average
m. This means that N traces are acquired to make the complete average.
If averaging is off, the value of power averaged is the same as the
power single burst value.
4. Number of samples is the number of data points in the captured
signal. This number is useful when performing a query on the signal
(that is when n=0, 2, et cetera).
5. Start point of the useful part of the burst is the index of the data
point at the start of the useful part of the burst.
6. Stop point of the useful part of the burst is the index of the data
point at the end of the useful part of the burst.
7. Index of the data point where T0occurred.
8. Burst width of the useful part of the burst is the width of the burst
measured at −3dB below the mean power in the useful part of the burst.
9. Maximum value is the maximum value of the most recently acquired
data (in dBm).
10.Minimum value is the minimum value of the most recently acquired
data (in dBm).
11.Burst search threshold is the value (in dBm) of the threshold where a
valid burst is identified, after the data has been acquired.
12.IQ point delta is the number of data points offset that are internally
applied to the useful data in traces n=2,3,4. You must apply this
correction value to find the actual location of the Start, Stop, or T
0
values.
2Returns the entire captured RF envelope (data array). It is represented as
log-magnitude versus time. This array contains 401 points of data.
2-66Chapter2
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MEASure Group of Commands
Transmit Band Spurs Measurement
This measures the spurious emissions in the transmit band relative to
the channel power in the selected channel. You must be in the GSM
mode to use these commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:TSPur
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
Measurement Results Available
nResults Returned
Not specified or
n=1
2Returns the current trace data (401 point real number comma separated
Returns 3 comma-separated scalar results:
1. The frequency of the worst spur (in Hz)
2. The amplitude of the worst spur relative to limit (in dB)
3. Float32NAN is returned at all times for GSM
list).
Chapter 22-67
Language Reference
MEASure Group of Commands
Transmit Power Measurement
This measures the power in the channel. It compares the average power
of the RF signal burst to a specified threshold value. You must be in the
GSM mode to use these commands. Use INSTrument:SELect to set the
mode.
The general functionality of CONFigure, FETCh, MEASure, and READ
are described at the beginning of this section. See the SENSe:TXPower
commands for more measurement related commands.
After the measurement is selected, press Restore Meas
Defaults to restore factory defaults.
not specified or
n=1
Measurement Results Available
Returns the following comma-separated scalar results:
1. Sample time is a floating point number representing the time between
samples when using the trace queries (n=0, 2, et cetera).
2. Power is the mean power (in dBm) of the power above the threshold
value. If averaging is on, the power is for the latest acquisition.
3. Power averaged is the threshold power (in dBm) for N averages, if
averaging is on. An average consists of N acquisitions of data which
represents the current trace. If averaging is off, the value of poweraveraged is the same as the power value.
4. Number of samples is the number of data points in the captured signal.
This number is useful when performing a query on the signal (that is
when n=0, 2, et cetera).
5. Threshold value is the threshold (in dBm) above which the power is
calculated.
6. Threshold points is the number of points that were above the threshold
and were used for the power calculation.
7. Maximum value is the maximum of the most recently acquired data (in
dBm).
8. Minimum value is the minimum of the most recently acquired data (in
dBm).
2Returns the RF Envelope Trace (data array). This array contains 401 points
of data.
2-68Chapter2
Language Reference
MMEMory Subsystem
MMEMory Subsystem
The purpose of the MMEMory subsystem is to provide access to mass
storage devices such as internal or external disk drives. Any part of
memory that is treated as a device will be in the MMEMory subsystem.
If mass storage is not specified in the filename, the default mass
storage specified in the MSIS command will be used.
The forward slash / and the reverse slash \ are both acceptable
delimiters for specifying a directory path.
Store a Measurement Results in a File
:MMEMory:STORe:RESults filename.csv
Saves the measurement results to a file in memory. The file name must
have a file extension of .csv and will be in the CSV (comma-separated
values) format.
The READ? commands are used with several other commands and are
documented in the section on the “MEASure Group of Commands” on
page 51.
2-70Chapter2
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SENSe Subsystem
SENSe Subsystem
Sets the instrument state parameters so that you can measure the
input signal.
Cable Fault Location Measurement
Commands for querying the cable fault location measurement results
and for setting to the default values are found in the MEASure group of
commands. The equivalent front panel keys for the parameters
described in the following commands, are found under the
key, after the Cable Fault measurement has been selected from the
MEASURE key menu.
Cable Fault Location—Average Count
[:SENSe]:CFLocation:AVERage:COUNt <integer>
Meas Setup
[:SENSe]:CFLocation:AVERage:COUNt?
Set the number of frames that will be averaged. After the specified
number of frames (average counts) have been averaged, the averaging
mode (termination control) setting determines the averaging action.
Factory Preset
and *RST:10
Range:1 to 1000
Remarks:You must be in GSM mode to use this command. Use
Select the type of termination control used for averaging. This
determines the averaging action after the specified number of frames
(average count) is reached.
Exponential - Each successive data acquisition after the average
count is reached, is exponentially weighted and combined with the
existing average.
Repeat - After reaching the average count, the averaging is reset and
a new average is started.
Factory Preset
and *RST:Exp
Remarks:You must be in GSM mode to use this command. Use
Set the resolution BW. This is an advanced control that normally does
not need to be changed. Setting this to a value other than the factory
default may cause invalid measurement results.
Factory Preset
and *RST:3 MHz
Default Unit:Hz
Remarks:You must be in GSM mode to use this command. Use