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Four independent sections
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Bipolar inputs
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Three 4 In / 4 Out and one 3 In / 3 Out sections
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One Discriminator channel
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Inverting or non-inverting mode independently selectable on each section
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120 MHz bandwidth
The Mod. V925 is a 1-unit VME module which houses three 4 In / 4 Out and one 3 In / 3 Out sections; one Discriminator channel is also featured.
Each Fan in/Fan out section produces on all its output connectors, the sum of the signals fed to the inputs, eventually inverted.
Fan in/Fan out inputs are bipolar, while the output can be either inverting or non inverting (jumper selectable independently for each section).
Both input and output signals are DC coupled.
Maximum input amplitude is ±1.6 V.
Moreover each Fan in/Fan out section features a screwdriver trimmer which allows the DC offset adjustment.
The discriminator channel has one DC coupled input (polarity is jumper selectable), the threshold is screwdriver adjustable and monitorable via test point; the output is NIM standard, its width is screwdriver adjustable as well.
Front panel LEDs allow to monitor all the mode, gain and polarity adjustments performed via internal jumpers.
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Technical Specifications
|
Packaging |
1 unit VME module |
|
Inputs |
50 Ω impedance; DC coupled. Positive, negative or bipolar polarity |
|
Reflection |
Less than 4% for inputs of 2 ns risetime |
|
Zero adjustment |
±100 mV |
|
Outputs |
DC coupled. All the unused inputs and outputs must be terminated for optimum output shape. |
|
Max. output amplitude |
± 1.6 V |
|
Integral non-linearity |
± 1% up to 1 V |
|
Input reflection |
< 4% |
|
Interchannel crosstalk |
< 40 dB |
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Input bandwidth |
120 MHz (input: sine wave with 1 V peak-to-peak amplitude) |
|
DC offset stability |
< 100 µV/°C |
|
Input/output delay |
4 ± 1 ns |
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Noise |
< 300 µV RMS |
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Discriminator input |
DC coupled on either leading or trailing edge (jumper selectable), 50 Ω; 160 MHz max. frequency |
|
Discriminator max. input voltage |
± 5V |
|
Discriminator threshold range |
± 1200 mV |
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Discriminator min. detectable input |
± 30 mV |
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Discriminator out |
Std. NIM level, provided across a 50 Ω load, non updating; two width ranges (adjustable): 4÷70 ns and 15÷600 ns |
|
Discriminator I/O delay |
< 7 ns |
|
Output rise/fall time |
1 ns |
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