Ультразвуковой предусилитель 5678, используемый с ультразвуковыми дефектоскопами, толщиномерами и приборами акустического излучения, усиливает низкоамплитудные ультразвуковые сигналы. Характеристики: Полоса пропускания от 200 кГц до 40 МГц, коэффициент усиления 40 дБ.
| MODEL | 5660B | 5660C | 5662 | 5670 | 5676 | 5678 |
| Voltage Gain (Inverting) |
40 and 60 dB Switchable (RL > 1K ohm) |
40 and 60 dB Switchable (RL > 1K ohm) |
34 and 54 dB Switchable (RL = 50 ohm) |
40 dB Fixed (RL = 50 ohm) |
40 dB Fixed (RL = 50 ohm) |
40 dB Fixed (RL = 50 ohm) |
| Bandwidth (-3dB) |
20 kHz - 2 MH |
500 Hz - 2 MHz |
50 kHz - 5 MHz |
50 kHz - 10 MHz |
50 kHz - 20 MHz |
200 kHz - 40 MHz |
| Equivalent Input Noise |
5 µV p-p | 5 µV p-p | 10 µV p-p | 15 µV p-p | 20 µV p-p | 30 µV p-p |
| Input Resistance |
1M ohm | 1M ohm | 100K ohm | 100K ohm | 100K ohm | 100K ohm |
| Input Capacitance (pf) |
approx. 320 | approx. 320 | approx. 80 | approx. 80 | approx. 80 | approx. 80 |
| Input | ||||||
| Protection | 300 V peak (Pulse Width <2 µs, 1% Maximum Duty Cycle) | |||||
| Output | 5 V p-p (RL > 1 K ohm) | |||||
| Voltage | 2 V p-p (RL = 50 ohm) | 2 V p-p (RL = 50 ohm) | ||||
| Output | ||||||
| Impedance |
50 ohms in series with 4.7 fd |
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| Max. Output | >500' (152 m) | 50' (15 m) | ||||
| Power | 16 V ± 2 V supplied by 4 Alkaline 9 V, 655 mAh batteries | |||||
| Requirements | Line operated units available. Add /110 VAC, /115 VAC, or /230 VAC to the Model Number (e.g. 5675/115 VAC). | |||||
| Current Consumption |
28 mA | 28 mA | 28 mA | 32 mA | 32 mA | 36 mA |
| Battery Life |
>40 hrs | >40 hrs | >40 hrs | >35 hrs | >35 hrs | >35 hrs |
| Dimensions | 3" W x 2" H x 5" D (76 mm W x 51 mm H x 127 mm D) | |||||
| Weight |
1.4 lbs. (0.64 kg) |
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| Operating Temperature |
32° F to 122° F (0° C to 50° C) |
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