Agilent Technologies E4438C, Техническое описание, Страница: 13 / 40

13
Resolution 0.1% of set deviation
Modulation frequency response
3, 4
Standard
Maximum Allowable rates [3 dB BW]
Mode deviation F M path 1 F M path 2
Normal BW N x 80 rad DC to 100 kHz DC to 100 kHz
High BW
6
N x 8 rad (DC to 1 MHz) (DC to 0.9 MHz)
N x 1.6 rad (DC to 10 MHz) (DC to 0.9 MHz)
With Option UNJ
Maximum Allowable rates [3 dB BW]
Mode deviation F M path 1 F M path 2
Normal BW N x 10 radians DC to 100 kHz DC to 100 kHz
High BW N x 1 radians (DC to 1 MHz) (DC to 0.9 MHz)
Deviation accuracy [1 kHz rate, Normal BW mode]
< ±5% of dev 0.01 radians
Distortion
3
[1 kHz rate, deviation < 80 radians on standard model, < 10 N radians on
Option UNJ models, Normal BW mode]
< 1%
F M using external inputs 1 or 2
Sensitivity 1 V
peak
for indicated deviation
Input impedance 50
Ω
, nominal
Paths F M path 1 and F M path 2 are summed internally for composite
modulation. The F M 2 path is limited to a maximum rate of
1 MHz. F M path 2 must be set to a deviation less than the F M
path 1.
Range 0 to 100%
Resolution 0.1%
Rates [3 dB bandwidth]
DC coupled 0 to 10 kHz
AC coupled 10 Hz to 10 kHz
Accuracy
4, 7
1 kHz rate < ±(6% of s1%)
Distortion
4, 7
[1 kHz rate, THD]
Option 501-504/Option UNJ Option 506
30% AM < 1.5% < 1.5%
90% AM (< 4%) (< 5%)
AM using external inputs 1 or 2
Sensitivity 1 V
peak
to achieve indicated depth
Input impedance 50
Ω
, nominal
Paths AM path 1 and AM path 2 are summed internally for
composite modulation.
Specifications for Analog Modulations
1. All analog performance above 4 GHz is typical.
2. For non-Option UNJ units, specifications apply in phase noise mode 2 [default].
3. Refer to frequency bands on page 12 for N.
4. Parentheses denote typical performance.
5. Bandwidth is automatically selected based on deviation.
6. AM is typical above 3 GHz or if wideband AM or I/Q modulation is simultaneously enabled.
7. Peak envelope power of AM must be 3 dB less than maximum output power below 250 MHz.
Phase modulation
1, 2
Amplitude modulation 1, 6
[fc > 500 kHz]