Rohde & Schwarz SMIQ02B User manual

1125.5610.12-11 I
Test and Measurement
Division
Operating Manual
VECTOR SIGNAL GENERATOR
SMIQ02B
1125.5555.02
SMIQ03B
1125.5555.03
SMIQ03HD
1125.5555.33
SMIQ04B
1125.5555.04
SMIQ06B
1125.5555.06
SMIQ06ATE
1125.5555.26
Volume 1
This Operating Manual consists of 2 volumes
Printed in the Federal
Republic of Germany

SMIQ06ATE Supplement
1125.5555.06 A E-1
Supplement to Manual
SMIQ06ATE
The functionality of model SMIQ06ATE and its compliance with specifications correspond to model
SMIQ06B (see Data sheet SMIQB06B).
Model SMIQ06ATE differs from model SMIQ06B as follows:
•The instrument has no display (item 1 in front panel view)
•The connectors on the front panel (item 4 in front panel view) are provided on the rear panel.
•The following connectors are not fitted:
−I Faded,
−Q Faded,
−I/Q AUX,
−LF,
−EXT 1,
−EXT 2,
−SYM CLK,
−X-AXIS,
−BLANK,
−MARKER,
−SER DATA,
−PULS,
−EXTTUNE
−BER
−DATA
−BITCLOCK and
−PAR DATA
For manual operation of the SMIQ06ATE please download SMIQ-TV from the www.rohde-schwarz.com
website. SMIQ-TV runs on any external Windows™ PC including a GPIB controller and features a full
display of the SMIQ.

SMIQ Supplement
1125.55610.12-10- A E-1
Supplement to Manual SMIQ
Special Features of HD Model
VECTOR MOD menu with model SMIQ03HD:
IQ FILTER Selection between filter off and a 2.5 MHz, 5 MHz, 7.5 MHz or 10 MHz lowpass filter in the base-
band. The filters suppress noise in the baseband, which improves adjacent channel power
(ACP) with W-CDMA. The filter frequency response is automatically compensated with DIGITAL
MOD and DIGITAL STD in the MCOD mode, so that the error vector magnitude (EVM)
deteriorates only slightly. If the VECTORMOD mode is active and AMIQ with WinIQSIM used
as a source, the frequency response is compensated by WinIQSIM. For applications requiring a
very low EVM the I/Q filter should always be switched OFF.
OFF filter off
2.5 MHz 2.5 MHz lowpass filter
5 MHz 5 MHz lowpass filter
7.5 MHz 7.5 MHz lowpass filter
10 MHz 10 MHz lowpass filter
IEC/IEEE-bus commands :SOUR:DM:IQ:FILT:STAT ON|OFF
:SOUR:DM:IQ:FILT:FREQ 2.5MHZ
HIGH ACLR W-CDMA signals with a very high adjacent channel power ratio (ACPR) can be generated
in the 3GPP downlink band by means of option SMIQB57 (High ACLR for W-CDMA) in
conjunction with option SMIQB20 (Modulation Coder). Moreover, RF peak levels up to
+30 dBm can be produced thanks to the extremely linear power amplifier.
Note: Option SMIQB57 can be used only in the 2110 MHz to 2170 MHz 3GPP
downlink band. Although carrier frequencies outside this band can be set, no
specified values exist for such applications.
I/Q modulator
I
QWCDMA filter
RF output
G
BP
2110 to 2170MHz
BW3.84MHz Power
Amplifier
RF up/down converter
sin
cos
High ACLR option SMIQB57
Fig. 1 High ACLR for W-CDMA

Supplement SMIQ
1125.55610.12-10- B E-1
Option SMIQB57 incorporates a filter tailored to the channel bandwidth of a 3GPP
W-CDMA signal (3.84 MHz) for suppressing unwanted signal components outside the
useful band. SMIQB57 can for this reason be used effectively only with this particular type
of digital modulation. Despite this, the option can be used with other digital modulation
modes provided the occupied bandwidth is smaller than 3.84 MHz and the channel
frequency is in the range of 2110 MHz to 2170 MHz. This may be expedient for
applications requiring very high RF levels.
Output power with option SMIQB57 (High ACLR for W-CDMA):
With option SMIQB57 installed, the maximum output power is +30 dBm. The dynamic range
of the electronic level setting is extended to 30 dB in the Attenuator Fixed mode.
IEC/IEEE-bus command :SOUR:DM:IQ:HACLr:STAT
New Features Not Concerning HD Model
VECTOR MOD menu
IQ FILTER Only with option SMIQB47; not on SMIQ03HD.
Selection between filter off and a 850 kHz, 2.5 MHz or 5 MHz lowpass filter in the
baseband. The filters suppress noise in the baseband from 900 kHz, 3 MHz or 6 MHz,
which improves adjacent channel power (ACP) with IS-95 and W-CDMA. The filter
frequency response is automatically compensated with DIGITAL MOD and DIGITAL STD
in the MCOD mode, so that the error vector magnitude (EVM) deteriorates only slightly.
If the VECTOR MOD mode is active and AMIQ with WinIQSIM used as a source, the
frequency response is compensated by WinIQSIM. For applications requiring a very low
EVM the I/Q filter should always be switched OFF.
OFF filter off
850 kHz 850 kHz lowpass filter
2.5 MHz 2.5 MHz lowpass filter
5 MHz 5 MHz lowpass filter
IEC/IEEE-bus commands :SOUR:DM:IQ:FILT:STAT ON|OFF
:SOUR:DM:IQ:FILT:FREQ 2.5MHZ

SMIQ Supplement
1125.55610.12-10- C E-1
New Features on All Models
DIGITAL MOD – FILTER menu:
A new filter was added:
(FILTER...) FILTER TYPE GAUSS LINEAR linearized Gaussian filter for GSM_EDGE
(to GSM Specification 05.04, Change Request A010)
IEC/IEEE-bus command:
:SOUR:DM:FILT:TYPE LGA
GAUSS LINEAR
(old version) linearized Gaussian filter for GSM_EDGE
(to GSM Specification older than 05.04)
IEC/IEEE-bus command:
:SOUR:DM:FILT:TYPE OLG
DIGITAL STD – WCDMA/3GPP menu:
OCNS CHANNELS was changed to ADD OCNS.
ADD OCNS Simulation of orthogonal channel noise. This menu item is available only in the downlink
and if option SMIQB48 is installed. For more information refer to section 2.15.4.
Section 2.15.4 ADD OCNS:
Generation of orthogonal channel noise (OCNS) to TS 25.101
The OCNS scenario is defined as follows:
Table C.6: DPCH spreading code, timing offsets and relative level settings for OCNS signal
Channelization code Timing offset
(x256Tchip)Level setting (dB)
286-1
11 134 -3
17 52 -3
23 45 -5
31 143 -2
38 112 -4
47 59 -8
55 23 -7
62 1 -4
69 88 -6
78 30 -5
85 18 -9
94 30 -10
125 61 -8
113 128 -6
119 143 0
Parameters common to all OCNS channels:
Type: DPCH
Symbol rate: 30 ksps
Pilot length: 8 bit
The powers of the OCNS channels are to be understood as relative powers only. In the test scenarios
defined by the standard, the OCNS channels are weighted so that a sum power of linear 1 (or 0 dB) is
obtained. This is done automatically in SMIQ.

Supplement SMIQ
1125.55610.12-10- D E-1
If ADD OCNS is set to ON,
•channels 15 to 30 of base station 1are automaticallyset as shown in the table above
and
•the power of the OCNS component is adjusted automatically so that the powers of the OCNS
channels and the powers of the non-OCNS channels of base station 1 add up to yield a sum power
of linear 1.
The settings for the 16 OCNS channels are READ ONLY settings, i.e. they cannot be modified. In the
channel table, the OCNS channels are marked by an "O" after the channel number.
If the setting of a non-OCNS channel is modified, the power of the OCNS channels is adjusted
immediately. If adjustment is not possible because the powers of the non-OCNS channels already add
up to 0 dB or higher, the OCNS channels are set to -60 dB. In this case an error message is output
when WCDMA/3GPP is switched on.
Further Settings of ENHANCED CHANNELS Menu:
SEQUENCE LENGTH The maximum sequence length not only depends on free DGEN list memory
space but also decisively on the ENHANCED P-CCPCH/BCH status and,
where applicable, on the number of DPCHs:
ENHANCED P-CCPCH/BCH STATE = OFF
1 DPCH: 1022 frames
2 DPCHs: 511 frames
3 DPCHs: 341 frames
4 DPCHs: 255 frames
ENHANCED P-CCPCH/BCH STATE = ON
SYMBOL RATE DPCH ≤30 ksps: 2044 frames
SYMBOL RATE DPCH > 30 ksps: 500 frames
New IEC/IEEE-Bus Commands
[:SOURce]:DM:IQ:FILTer:FREQuency 850 kHz, 2.5 MHz, 5 MHz, 7.5 MHz, 10 MHz
With this command, an IQ filter with the required cutoff frequency is selected. The command is
available, with option SMIQB47 (LOW ACP for IS-95 CDMA and W-CDMA) installed, for cutoff
frequencies 850 kHz, 2.5 MHz and 5 MHz. With model SMIQ03HD, cutoff frequencies 2.5 MHz,
5 MHz, 7.5 MHz and 10 MHz are available.
Example: :SOUR:DM:IQ:FILT:FREQ 2.5MHZ *RST value is 2.5 MHz
[:SOURce]:DM:IQ:HACLr:STATe ON | OFF
This command switches the option SMIQB57 on or off.
Example: :SOUR:DM:IQ:HACL:STAT ON *RST value is OFF

1125.5610.12-08 A E-1
Supplement to Manual SMIQ
Output Mode
NORMAL This mode corresponds to that of the previous SMIQ.
LOW NOISE: The modulation in the SMIQ is set so that the power of the second and following
adjacent channels (ALT1...) is minimal.
LOW DIST: The modulation in the SMIQ is set so that the power of the first adjacent channel
(ADJ) is minimal. This optimization takes into consideration the modulation signal
and the version-dependent parameters of the module at 2 GHz.
Hints for the individual modes:
CW: The output mode has no effect in this mode.
VECTOR MOD: With the LOW NOISE output mode, you should additionally raise the IQ level
applied (max. 1 V p). The optimal IQ level with LOW DIST depends on the
modulation signal and must be ascertained through measurements. The adjacent
channel power for symbol rates <200 kHz is essentially determined through
multiplicative phase noise. The IQ level can be set to 250 mV p independent of the
modulation signal.
The level error caused by a change in the IQ level can be corrected with the
LEVEL OFFSET.
ARB MOD: With the LOW NOISE / LOW DIST output mode, the modulation in the SMIQ only
changes by a fixed amount. The user can vary the IQ level in order to achieve the
best results with LOW DIST as a function of the modulation signal.
FADSIM/NDSIM: If these modules are activated, the output mode has no effect. If FSIM is activated,
the adjacent channel power can be optimized by the parameter "Insertion Loss
Setting Mode" in the FADSIM menu.
Additional hints:
The specifications for the level accuracy and harmonic ratio are only valid for the NORMAL output
mode; in the other modes they can change.
IEC/IEEE-bus command:SOURce:POWer[:LEVel]:OMODe NORMal
|LDIStortion
|LNOise