Custom Arb Waveform Generator

Working with Symbol Rates

Working with Symbol Rates

The Symbol Rate menu enables you to set the rate at which I/Q symbols are fed to the I/Q modulator. The default transmission symbol rate can also be restored in this menu.

•Symbol Rate (displayed as Sym Rate) is the number of symbols per second that are transmitted using the modulation (displayed as Mod Type) along with the filter and filter alpha (displayed as Filter). Symbol rate directly influences the occupied signal bandwidth.

Symbol Rate is the Bit Rate divided by the number of bits that can be transmitted with each symbol; this is also known as the Baud Rate.

•Bit Rate is the frequency of the system bit stream. The internal baseband generator (Option 602) automatically streams the selected Data Pattern at the appropriate rate to accommodate the symbol rate setting (Bit Rate = Symbols/s x Number of Bits/Symbol).

•Occupied Signal Bandwidth = Symbol Rate x (1 + Filter Alpha); therefore, the occupied signal bandwidth is dependent on the filter alpha of the Nyquist or Root Nyquist filter being used. (To change the filter alpha, refer to the procedure, “Adjusting the Filter Alpha of a Predefined Root Nyquist or Nyquist Filter” on page 147.)

To Set a Symbol Rate

1.Press Preset.

2.Press Mode > Custom > ARB Waveform Generator > Digital Mod Define > Symbol Rate or

Mode > Custom > Real Time I/Q Baseband > Symbol Rate

3.Enter a new symbol rate and press Msps, ksps, or sps.

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Agilent Technologies E8257D PSG, E8267D PSG manual Working with Symbol Rates, To Set a Symbol Rate
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E8267D PSG, E8257D PSG specifications

Agilent Technologies, a recognized leader in electronic measurement and communications solutions, offers a comprehensive range of signal generators, including the E8257D PSG (Pulsed Signal Generator) and E8267D PSG. These instruments are engineered to meet the demanding requirements of wireless communication, aerospace, defense, and various research applications.

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