Help with Frequency-to-Voltage Converters specifications:
Device Specifications
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| Analog Input Channels: | This is the maximum number of analog channel inputs. The single-ended number is specified when single-ended inputs are available as twice the number of differential inputs. Differential channels use the difference between two signals as an input; common mode is filtered out. In some systems, differential inputs are combinations of two single-ended inputs. When this is the case, twice the number of differential channels are available as single-ended inputs. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Differential Channels | Differential channels have two inputs. The signal to process is the voltage (V) difference between the two inputs. For example, if one reading is 4.93 V and the other reading is 5.16 V, the meaningful value is the 0.23 V difference between the two. Often, this applies to precision measurements where the difference between two low-voltage inputs is small but critical. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Bandwidth | Bandwidth is the difference between the high and low limits of the frequency response, typically defined by a variation from a nominal value by a stated value such as 3 dB. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Maximum Output | This is the limit of output voltage. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Accuracy | Accuracy depends on the signal conditioning linearity, hysteresis, temperature considerations, etc. It is represented here as percent full scale of measurement range. | ||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
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| Signal Isolator | Signal isolation is the separation of any direct electrical contact of a signal. This can be done in various ways, including optical isolation, capacitors, and magnetic induction. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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Signal Inputs
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| Your choices are... | |||
| DC Voltage Input | |||
| AC Voltage Input? | |||
| Frequency Input? | Input for varying frequency, pulse, or other specialized waveform. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Specialized & Other Inputs
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| Your choices are... | |||
| Encoder Input? | Inputs for an encoder signal such as binary, gray, or binary-coded decimal (BCD). | ||
| Counter / Tachometer Input? | Typically, the inputs from counters or tachometers are one signal per cycle counts. | ||
| Timer / Clock Input? | Inputs for any type of time signal. | ||
| Relay / Switch Input? | Inputs for a discrete, on/off signal from an exterior device. | ||
| Other Input? | Other unlisted or specialized inputs. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Filter Specifications
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| Low Pass Cutoff Frequency | The low pass cutoff frequency is the nominal frequency below which the input signal is passed and above which the signal is blocked. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Filter Type: | |||
| Your choices are... | |||
| Integral Filter? | Integral filters allow certain signal frequencies to pass while attenuating others. These filters can also operate on signal phase. | ||
| Programmable Filter? | Filter parameters such as cutoff frequencies may be interactively programmed by the user. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Form Factor
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| Form Factor | |||
| Your choices are... | |||
| Printed Circuit Board (PCB) | Devices are printed circuit boards (PCBs) that attach to enclosures or plug directly into computer backplanes. | ||
| Panel / Chassis Mount | Devices attach to a panel or bolt onto a chassis. | ||
| Modular Bay / Slot System | Devices stack in modular bays or slots, and can be interfaced to other units. | ||
| Rack Mount | Devices are rack-mounted and fit inside enclosures such as a standard 19 in. telecommunications rack. | ||
| DIN Rail | Devices mount on a standard DIN rail. DIN is an acronym for Deutsches Institut für Normung (DIN), a German national organization for standardization. | ||
| Stand Alone | Devices are benchtop or floor-standing units with a full casing or cabinet, and an integral interface. | ||
| Other | Other unlisted form factors. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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User Interface
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| User Interface | |||
| Your choices are... | |||
| None | There is no user input or programmability. Instead, there is "black box" style of storage for download or processing elsewhere. | ||
| Front Panel and Display | There are integral controls, a keypad, and/or a display on the panel of the unit. | ||
| Touch Screen | The device's visual display screen is contact-sensitive to allow direct input. | ||
| Hand-held / Remote Programmer | The interface unit is designed specifically to be held in the hand while the user enters program parameters, and may include remote programming. | ||
| Computer Programmable | The device is interfaced to a separate supervisory or host computer. | ||
| Other | Other unlisted user interface methods. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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