Agilent Technologies ESG Spezifikationen Seite 124

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2-46 Programming Guide
Programming Commands and Examples ESG Family Signal Generators
:PM Subsystem
:PM Subsystem
The phase modulation subsystem is used to set the modulation controls and the
parameters associated with phase modulated signals.
Φ Modulation Bandwidth Configuration
:PM[1]|2:BANDwidth|BWIDth NORMal|HIGH
:PM[1]|2:BANDwidth|BWIDth?
This command toggles between normal phase modulation mode and wideband phase
modulation mode. The choices are Normal and Wideband.
*RST Value: Normal
Φ Modulation Deviation
:PM[1]|2[:DEViation] <val><unit>
:PM[1]|2[:DEViation]?
This command sets the deviation of the phase modulation. The choices for the variables
<val> and <unit> depend on the carrier frequency. For the ESG-A and ESG-D Series, the
maximum peak deviation for a frequency is calculated by multiplying N by 10 MHz. (Refer
to Table 2-1.) For the ESG-AP and ESG-DP Series, the maximum peak deviation for a
frequency is calculated by multiplying N by 1 MHz. (Refer to Table 2-2.)
Table 2-1. Phase Modulation Frequency Response (ESG-A and ESG-D)
Mode
Maximum
Deviation
Maximum Rates (3 dB BW)
ΦMPath1 ΦMPath2
Normal
N
1
× 90 radians
1. For the value of N, refer to Table 2-3.
dc to 100 kHz dc to 100 kHz
High
Bandwidth
N
1
× 2π radians
dc to 1.5 MHz (typical) dc to 0.9 MHz (typical)
N
1
× π/2 radians
dc to 4 MHz (typical) dc to 1 MHz (typical)
Table 2-2. Phase Modulation Frequency Response (ESG-AP and ESG-DP)
Mode
Maximum
Deviation
Maximum Rates (3 dB BW)
ΦMPath1 ΦMPath2
Normal
N
1
× 10 radians
1. For the value of N, refer to Table 2-3.
dc to 100 kHz dc to 100 kHz
High
Bandwidth
N
1
× 1 radians
dc to 1MHz dc to 1 MHz
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