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154 Chpater 6
Custom Arb Waveform Generator
Working with Symbol Rates
To Restore the Default Symbol Rate (Custom Real Time I/Q Only)
• Press Mode > Custom > Real Time I/Q Baseband > Symbol Rate > Restore Default Symbol Rate.
This replaces the current symbol rate with the default symbol rate for the selected modulation
format.
Modulation Type
Bits
Per
Symbol
Bit Rate =
Symbols/s x Number of
Bits/Symbol
Internal Symbol Rate
(Minimum Maximum)
Custom Real Time Only
External Symbol Rate
(Minimum Maximum)
PSK
Phase
Shift
Keying
QPSK and OQPSK
(quadrature phase shift keying
and
offset quadrature phase shift
keying)
Includes: QPSK, IS95 QPSK,
Gray Coded QPSK, OQPSK,
IS95 OQPSK
2 90 bps − 100 Mbps 45 sps − 50 Msps 45 sps − 25 Msps
BPSK
(binary phase shift keying)
1 45 bps − 50 Mbps 45 sps − 50 Msps 45 sps − 50 Msps
π/4 DQPSK 2 90 bps − 100 Mbps 45 sps − 50 Msps 45 sps − 25 Msps
8PSK
(eight phase state shift keying)
3 135 bps − 150 Mbps 45 sps − 50 Msps 45 sps − 16.67 Msps
16PSK
(sixteen phase state shift keying)
4 180 sps − 200 Mbps 45 sps − 50 Msps 45 sps − 12.5 Msps
D8PSK
(eight phase state shift keying)
3 135 bps − 150 Mbps 45 sps − 50 Msps 45 sps − 16.67 Msps
MSK
Minimum
Shift
Keying
MSK
(GSM - Global System for
Mobile Communications)
1 45 bps − 50 Mbps 45 sps − 50 Msps 45 sps − 50 Msps
FSK
Frequenc
y
Shift
Keying
2-Lvl FSK 1 45 bps − 50 Mbps 45 sps − 50 Msps 45 sps − 50 Msps
4-Lvl FSK 2 90 bps − 100 Mbps 45 sps − 50 Msps 45 sps − 25 Msps
8-Lvl FSK 3 135 bps − 150 Mbps 45 sps − 50 Msps 45 sps − 16.67 Msps
16-Lvl FSK 4 180 bps − 200 Mbps 45 sps − 50 Msps 45 sps − 12.5 Msps
C4FM 2 90 bps − 100 Mbps 45 sps − 50 Msps 45 sps − 25 Msps