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4
Specifications
All performance specifications after 2 hour warm‑up at (23 ± 1)
and within 24 hours of automatic offset calibration.
Input
Input level
AC coup. ( − 3 dB, with 50 Ω source)
50 Ω
500 Ω
Input impedance
50 Ω
500 Ω
Clamp levels
Protection
Noise (+40 dB, r.t.i.)
1 MHz
1 Hz to 400 MHz
Amplifier
Gain
Accuracy
Flatness
Bandwidth ( − 3 dB)
Gain stability
Offset (r.t.i.)
Offset drift
Outputs
(specified into 50 Ω load)
Source impedance
Linear operation
Overload detection
Limit level
Overload recovery
Rise / Fall time
Propagation delay
Differential skew
General
Inputs
Outputs
Remote interface
Operating temp.
Mains voltage
Power
Weight
Dimensions
SR446 400 MHz Programmable Gain Preamplifier
General Information
± 500 mV
16 kHz (typ)
3 kHz (typ)
(50 ± 1) Ω
(500 ± 10) Ω
± 1.5 V
± 4 Vdc
√ Hz
3.3 nV/
(typ)
40 μVrms (typ)
1.0 V/V ( + 0 dB) to 100 V/V ( + 40 dB)
± 0.5 dB @ 1 MHz
± 0.3 dB, DC to 100 MHz (typ)
400 MHz (typ)
± 0.1 %/ ° C (typ)
± 1 mV
± 0.8 mV/ ° C (typ)
(50 ± 1) Ω
± 0.65 V, each channel
± 0.8 V (typ)
± 0.9 V
12 ns (typ)
1 ns (typ)
4.5 ns (typ)
20 ps (typ)
1 (BNC)
2 (BNC: inverting and non‑inverting)
USB type B
+ 5 ° C to + 40 ° C, non‑condensing
(85 to 264) Vac, (47 to 63) Hz
15 W (max), 5 W (typ)
2.3 lb
8.4 × 1.8 × 9.1, inches
∘
C ambient,
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