Atec Agilent-E4438C - Manual (Page 14)

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Rates [1 dB bandwidth] 1
ALC on (400 Hz to 40 MHz)
ALC off (DC to 40 MHz)
Wideband AM using external I input only
Sensitivity 0.5 V = 100%
Input impedance 50 Ω, nominal
On/off ratio 1
≤ 4 GHz
> 80 dB
> 4 GHz (> 64 dB)
Rise/fall times 1 (150 ns)
Minimum width 1
ALC on (2 µs)
ALC off (0.4 µs)
Pulse repetition frequency 1
ALC on (10 Hz to 250 kHz)
ALC off (DC to 1.0 MHz)
Level accuracy 1, 2 [relative to CW at ≤ 4 dBm standard, ≤ 7.5 dBm Option UNB,
≤ 4.5 dBm Option 506]
(< ±1 dB)
Pulse modulation using external inputs
Input voltage
RF on > +0.5 V, nominal
RF off < +0.5 V, nominal
Input impedance 50
Ω, nominal
Internal pulse generator
Square wave rate 0.1 Hz to 20 kHz
Pulse
Period 8 µs to 30 seconds
Width 4 µs to 30 seconds
Resolution 2 µs
Specifications for Analog Modulation
1. Parentheses denote typical performance.
2. With ALC off, specifications apply after the execution of power search. With ALC on, specifications apply for pulse repetition rates
≤ 10 kHz and pulse widths ≥ 5 µs.
Wideband AM
Pulse modulation