Atec Rohde-Schwarz-SMIQ Series - Manual (Page 11)

Vector Signal Generator R&S SMIQ – Specifications 11
Memory extension (option R&S SMIQB12)
The data generator memory can be extended to max. 79 Mbit by fitting up to two options R&S SMIQB12.
Digital standards with options R&S SMIQB20 and R&S SMIQB11
Inputs
Trigger input TRIGIN
Trigger frequency
Selectable trigger delay
Selectable trigger suppression
Switching threshold
Input impedance
Required pulse width for starting the data sequences in the data memory
<10 kHz
0 to 2
16 −1 symbols
0 to 2 26 −1 symbols after trigger
−2.5 V to 2.5 V, selectable, resolution 0.1 V
1 k
Ω to ground, 50 Ω to ground
>50 ns
Outputs
DATA modulation data
BURST GATE, LEV ATT
CW see data under “Digital Modulation“
control signals for envelope control and level attenuation
control signal for switching off digital modulation
TRIGOUT 1, TRIGOUT 2
TRIGOUT 3
HOP user-programmable trigger signals
trigger signal on event
control signal for frequency hopping in LIST MODE
Memory capacity 32 Mbit
Modulation and ACP specifications apply at the respective standard frequency ranges and at levels
≤8 dBm PEP with R&S SMIQ02B/03B
≤5 dBm PEP with R&S SMIQ04B/06B
Data sources
with TDMA
with CDMA internal, external via RS232 interface (SERDATA)
internal
Digital standard GSM / EDGE
Frequency
Standard
Range
to GSM standard
880 MHz to 960 MHz/1710 MHz to 2000 MHz
same as R&S SMIQ
Modulation GMSK or 8PSK EDGE (8PSK with 3 π/8 rotation)
Symbol rate
Standard
Range 270 833 Hz
100 Hz to 300 kHz
Baseband filter (GMSK)
Standard
Range Gauss, BxT = 0.3
Gauss, BxT = 0.2 to 0.7
Baseband filter (8PSK EDGE) Gauss Linear
Frame structure 1 to 8 slots user-definable
any burst types can be combined, incl. GSM and EDGE
mixed
Burst types
Burst on/off ratio
Burst rise/fall time
Slot attenuation, selectable
NORMAL, DUMMY, ALL DATA, NORMAL EDGE
>80 dB
corresponding to 3 symbols,
<18 µs
0 dB to 70 dB
Internal modulation data PRBS, 2 9 −1, 2 11 −1, 2 15 −1, 2 16 −1, 2 20 −1, 2 21 −1, 2 23 −1,
programmable data memory
External serial modulation data asynchronous via RS232 interface (SERDATA)