Atec Rohde-Schwarz-SMIQ Series - Manual (Page 28)

28 Vector Signal Generator R&S SMIQ – Specifications
Bit error rate measurement with option R&S SMIQB21
Option R&S SMIQB47 for improved adjacent-channel power ratio for WCDMA and CDMA IS-95
The data supplied by the DUT are compared with a reference pseudo-random bit sequence.
Pseudo-random bit sequences (PRBS)
2 9 -1, 2 11 -1, 2 15 -1, 2 16 -1, 2 20 -1, 2 21 -1, 2 23 -1
Clock source supplied by DUT; a clock pulse is required for each valid bit
Clock rate 100 Hz to 30 MHz
Synchronization time 24 clock cycles
Interface 9-pin sub-D connector, sub-D/BNC cable supplied with option
Data TTL
Data enable TTL
Clock TTL
Restart TTL
Setup time 10 ns
Hold time 2 ns
Polarity normal and inverted (data, clock, data enable)
Measurement time selectable through maximum number of data bits or bit errors (max. 2 31
bit each), continuous measurement
Measurement result BER in ppm, % or decade values (if selected number of data bits or bit
errors is attained)
status displays: not synchronized, no clock, no data
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
Selectable baseband filters to improve ACP values (values see at Digital Standards CDMA/WCDMA)
Bandwidth
OFF, 850 kHz, 2.5 MHz, 5 MHz
WCDMA chiprate 3.84 Mcps /4.096 Mcps, 1DPCH/1DTCH, f = 1800 MHz to 2200 MHz, IQ filter 2.5 MHz
Offset 5 MHz, low distortion output mode <−65 dBc, –70 dBc typ. 8 )
Offset 10 MHz, low noise output mode <−71 dBc, –74 dBc typ. 8 )
IS-95 CDMA, f = 824 MHz to 894 MHz and 1850 MHz to 2000 MHz, IQ filter 850 kHz
Reverse link
Offset 885 kHz <–78 dBc, –82 dBc typ.
Offset 1.25 MHz <–83 dBc, –87 dBc typ.
Offset 1.98 MHz <−85 dBc, –89 dBc typ.
9 channels forward link
Offset 885 kHz <–74 dBc, –78 dBc typ.
Offset 1.25 MHz <–80 dBc, –84 dBc typ.
Offset 1.98 MHz <−83 dBc, –86 dBc typ.
Error vector magnitude, rms
WCDMA chiprate 3.84 Mcps /4.096 Mcps,
IQ filter 2.5 MHz
<3%, 1.8% typ.
IS-95 CDMA IQ filter 850 kHz <2%, 1.3% typ.