Atec Agilent-E4437B - Manual (Page 8)

8
Amplitude modulation 1 (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%) 1
Distortion (1 kHz rate, THD)
30% AM <1.5%
90% AM <4%, typical
External inputs Ext 1 or Ext 2
Sensitivity 1 V
peak
for indicated depth
Input impedance 50 Ω, nominal
Paths AM 1 and AM 2 are summed internally for composite mod-
ulation. Either path may be switched to any one of the modulation
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
≤3 GHz
< ±0.8 dB, typical ≤4 GHz
(relative to CW) 2
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
Square wave 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)
3
On/off ratio
≤2 GHz >80 dB
>2 GHz >70 dB
Rise/fall times <10 ns
Delay <60 ns, typical
External input Pulse in
Input voltage +5 V (with RF on, TTL compatible)
Input impedance
1. AM is typical above 2 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 repetition rates
≤10 kHz and pulse widths ≥5µs.
3. With high performance pulse modulation (Option 1E6) installed, all maximum power specifications drop by 4 dB.