Agilent Technologies ESG Instrukcja Użytkownika Pobierz pdf (Strona 8)

Amplitude modulation

(fc > 500 kHz)

Range 0 to 100%

(envelope peak ≤ maximum specified power)

Resolution 0.1%

Rates (3 dB bandwidth) dc/10 Hz to 10 kHz

Accuracy (1 kHz rate) < ±(6% of setting + 1%)

Distortion (1 kHz rate, THD)

30% AM <1.5%

90% AM <4%, typical

External inputs Ext 1 or Ext 2

Sensitivity 1 Vpeak for indicated depth

Input impedance 50 Ω, nominal

Paths AM 1 and AM 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.

Wideband AM (ESG-DP and ESG-D series only)

Rate (1 dB bandwidth, typical)

ALC On 400 Hz to 10 MHz

ALC Off dc to 10 MHz

External input I input

Sensitivity 0.5 V = 100%

Input impedance 50 Ω, nominal

Pulse modulation

On/off ratio

≤ 3 GHz >80 dB

>3 GHz >60 dB

Rise/fall times 150 ns, typical

Minimum width

ALC On 2 µs, typical

ALC Off 0.4 µs, typical

Pulse repetition frequency

ALC On 10 Hz to 250 kHz, typical

ALC Off dc to 1.0 MHz, typical

Level accuracy ± 0.5 dB, typical

(relative to CW)

External input Ext 2

Input voltage

RF on >+0.5 V, nominal

RF off <+0.5 V, nominal

Input impedance 50 Ω, nominal

Internal pulse generator

Squarewave rate 0.1 Hz to 50 kHz

Pulse

Period 16 µs to 30 sec

Width 8 µs to 30 sec

Resolution 4 µs

High-performance pulse modulation

(Option 1E6, ESG-AP and ESG-A series)

On/off ratio

≤2 GHz >80 dB

>2GHz >70 dB

Rise/fall times <10 ns

Delay <60 ns, typical

External input Pulse in

Input voltage +5V (with RF on, TTL compatible)

Input impedance

1. AM is typical above 3 GHz or if wideband AM or I/Q modulation is simultaneously enabled.

2. With ALC off, specifications apply after the execution of power search. With ALC on, specifications apply for pulse repetitionrates ≤10 kHz and pulse widths ≥5µs.

3. With high performance pulse modulation (Option 1E6) installed, all maximum power specifications drop by 4 dB.

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