iM10 Multi-Function Interface
Important
The iM10 is deprecated, consider the other models in the iMn Multi-Function Interface line of products.
The iM10 has multiple specialized I/O functions, including advanced audio
processing critical for auditory behavioral experiments.
- Drive a speaker (e.g. MF1) directly up to 4W via an RCA connection.
- Record cage sounds via an embedded microphone amplifier.
- Connect with many common cage elements (e.g. touch sensors) via BNC ADC inputs and DAC outputs.
- Streamline setup with a range of embedded signal processing options.
See the Hardware Manual for information on iM10 technical specifications.
iM10 Options
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| iM10 Interface |
The Mic Amp setting lets you optionally enable the ⅛" jack to use for Inputs 1 and 2. It also adds 56.6 dB, 66.6 dB, or 76.6 dB gain to the input, and set Attack/Release ratios of 1:500, 1:2000, or 1:4000.
The Biasing setting lets you optionally adjust the input impedance and bias voltage on Inputs 3 and 4.
Important
Do not connect anything to the BNC Inputs 1 and 2 when the microphone amp is enabled.
All iM10 inputs go through an input processor. This first converts the analog signal into a TTL logic signal using the methods described below, and then goes through a logic processor. See iM10 Input Processor for more details and a diagram of the complete process for the iM10 analog inputs.
Analog Inputs
Logic
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| iM10 Logic Input Options |
Input signal above ~1.5 V triggers the logic input.
Example
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| iM10 Raw Input Signal and Logic Threshold Crossing |
Signals above ~1.5 V trigger the Micn epoc store. As with all iCon input epoc events,
a value of 3 is saved on the Rising edge and a value of 4 is saved on the Falling
edge.
The rest of the processing is handled by the Logic Input Processor.
Simple
Use the Simple option if you want to add gain to the analog input signal and manually set a threshold.
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| iM10 Simple Input Options |
Note
These settings are adjustable in the run-time interface
If threshold is positive, the lower threshold is (Thresh % - Hyst %).
Example
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| iM10 Raw Input Signal and Simple Threshold Crossing |
Thresh is 20% and Hyst is 15%. The input logic is true when the signal crosses above 20% of the input range (20% of 5 V = 1 V) and false when the signal goes below 5% of the input range (0.25 V).
If threshold is negative, the lower threshold is (Thresh + Hyst).
Example
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| iM10 Raw Input Signal and Simple Threshold Crossing |
Thresh is -20% and Hyst is 15%. The input logic is true when the signal crosses below -20% of the input range (-20% of 5 V = -1 V) and false when the signal goes above -5% of the input range (-0.25 V).
The rest of the processing is handled by the Logic Input Processor.
Complex
The iM10 processor runs at 400 kHz, independent of the RZ sampling rate. Use the Complex options to significantly increase fidelity in the frequency range you are interested in by reducing the input bandwidth. Also apply non-linear operations such as absolute value, square, flip the signal sign, or add smoothing.
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| iM10 Complex Input Options |
Note
All settings except for Frequency Range and Operation are adjustable in the
run-time interface.
See Simple processing options for a description of the rest of the settings and thresholding examples.
The rest of the processing is handled by the Logic Input Processor.
Clip Detect
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| iM10 Clip Detect Input Options |
Triggers when signal is within ~3% of the 5 V input range (greater than ~±4.8 V).
The rest of the processing is handled by the Logic Input Processor.
Touch Inputs
All touch sensor inputs are handled by the Logic Input Processor.
Analog Outputs
All iM10 outputs first go through a logical output processor that controls when the output is presented. See Logic Output Processor for more details.
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| iM10 Output Options |
^ For audio applications, set Freq Resolution to 10 Hz or 100 Hz only.
+ For precision control applications, use PWM instead
Outputs 1 and 2 are paired. Signals generated by Output 1 can be mixed with Output 2 and vice versa. Also, the choices of waveform shape for Output 2 depends on the selected waveform shape for Output 1. Likewise, Outputs 3 and 4 are also paired.