Agilent Technologies ESG Instrukcja Użytkownika Pobierz pdf (Strona 7)

Frequency modulation

Maximum deviation

ESG-A and ESG-AP and

ESG-D series ESG-DP series

N x 10 MHz N x 1 MHz

Resolution 0.1% of deviation or 1 Hz,

whichever is greater

Modulation frequency response (deviation = 100 kHz)

Rates

1 dB bandwidth 3 dB bandwidth, typical

FM1 dc/20 Hz to 100 kHz dc/5 Hz to 10 MHz

FM2 dc/20 Hz to 100 kHz dc/5 Hz to 1 MHz

Deviation accuracy

<±(3.5% of FM deviation + 20 Hz)

(1 kHz rate, deviation < N x 100

kHz)

Carrier frequency accuracy relative to CW in dcFM

2,3

±0.1% of set deviation + (N x 1

Hz)

Distortion

<1%

(1 kHz rate, THD, dev.= N x 100 kHz)

External inputs Ext 1 or Ext 2

Sensitivity 1 V

peak

for indicated deviation

Input impedance 50 Ω, nominal

Paths FM 1 and FM 2 are summed internally for composite

modulation. Either path may be switched to any one of the mod-

ulation sources: Int, Ext 1, Ext 2. The FM 2 path is limited to a

maximum rate of 1 MHz. The FM 2 path must be set to a devia-

tion less than FM 1.

Phase modulation

Maximum deviation

ESG-A and ESG-D ESG-AP and ESG-DP

series series

Normal BW N x 90 radians N x 10 radians

High BW N x 90 radians N x 1 radian

Resolution 0.1% of set deviation

Modulation frequency response

ESG-A and ESG-D series

Maximum Rates (3 dB BW)

Mode deviation ΦM1 ΦM2

Normal BW N x 90 rad dc to 100 kHz dc to 100 kHz

High BW N x 2π rad dc to 1.5 MHz (typ) dc to 0.9 MHz (typ)

N x π/2 rad dc to 4 MHz (typ) dc to 1 MHz (typ)

ESG-AP and ESG-DP series

Maximum Rates (3 dB BW)

Mode deviation ΦM1 ΦM2

Normal BW N x 10 rad dc to 100 kHz dc to 100 kHz

High BW N x 1 rad dc to 1 MHz (typ) dc to 1 MHz (typ)

Deviation accuracy <±(5% of deviation + 0.01 radians)

(1 kHz rate, Normal BW mode)

Distortion

<1%

1 kHz rate, THD, dev <N x 90 rad (dev < N x 10 rad for HP ESG-

and ESG-DP series), Normal BW mode

External inputs Ext 1 or Ext 2

Sensitivity 1 Vpeak for indicated deviation

Input impedance 50 Ω, nominal

Paths ΦM 1 and ΦM 2 are summed internally for composite

modulation. Either path may be switched to any one of the

modulation sources: Int, Ext 1, Ext 2. The ΦM 2 path is limited

to a maximum rate of 1 MHz. The ΦM 2 path must be set to a

deviation less than ΦM 1.

1. Since the internal modulation source operates over 0.1 Hz to 50 kHz, FM rates above 50 kHz must be supplied externally.

2. Refer to frequency bands on page 4 to compute specifications.

3. At the calibrated deviation and carrier frequency, within 5° C of ambient temperature at time of calibration.

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