24 | Keysight | E4990A Impedance Analyzer 20 Hz to 10/20/30/50/120 MHz - Data Sheet
General Characteristics
External reference input
Frequency
10 MHz ± 10 ppm (Typical)
0 dBm to ± 3 dB (Typical)
50 Ω (nominal)
Level
Input impedance
Connector type
BNC (female)
Internal reference output
Frequency
10 MHz ± 7 ppm (Typical)
0 dBm ± 3 dB into 50 Ω (Typical)
50 Ω (nominal)
Level
Output impedance
Connector type
BNC (female)
High stability frequency reference output (Option 1E5)
Frequency
10 MHz ± 1 ppm
0 dBm minimum
50 Ω (nominal)
BNC (female)
Level
Output impedance
Connector type
External trigger input
Level
TTL
Pulse width (Tp)
Polarity
≥ 2 µs (Typical); see Figure 9 for the definition of Tp.
Positive or negative (selective)
BNC (female)
Connector type
Tp
Tp
Tp
Tp
5V
0V
5V
0V
Positive Trigger Signal
Negative Trigger Signal
Figure 9. Required pulse width (Tp) for external trigger input
Line power
Frequency
47 to 63 Hz
Voltage
90-264 VAC (Vpeak > 120 V)
300 VA max.
VA max
Power consumption
160 W1 (Typical)
1. At preset condition. No application running other than the E4990A on windows.
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