Data Translation DT9837, User Manual

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Chapter 1
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The key hardware features of the DT9837C module are as follows:
• Simultaneous analog input and analog output operations (continuous or waveform
mode)
• Mini-XLR connectors (on the DT9837C-XLR) or BNC connectors (on the DT9837C-BNC)
for connecting audio inputs
• Analog input subsystem:
−
Four, simultaneous 24-bit A/D converters
−
Throughput rate up to 105.469 kSamples/s for simultaneous, high-resolution
measurements
−
Input range of ±10 V with software-selectable gains of 1 and 10 for an effective input
range of ±10 V and ±1 V
−
Support for IEPE (Integrated Electronic Piezoelectric) inputs, including use of a 2 mA
current source with 18 V compliance voltage for AC and DC coupling
−
1 Hz high-pass filter
−
Supports a start trigger for acquiring pre-trigger samples and a reference trigger for
acquiring post-trigger samples. You can specify the number of post-trigger samples to
acquire before stopping the operation.
−
For the start trigger, supports a software-programmable trigger source (software,
external digital trigger, or analog threshold trigger). You can program the analog input
threshold trigger to come from any analog input channel, to be positive- or
negative-going, and to have a threshold value from –10 V to +10 V.
−
For the reference trigger, supports a positive- or negative-going analog threshold
trigger on any of the analog input channels. You can program the threshold value from
–10 V to +10 V.
• Analog output subsystem:
−
One 24-bit D/A converter
−
Single value, waveform, and continuous streaming output
−
Programmable output rate from 10 kSamples/s to 96 kSamples/s
−
Output range of ±3 V
−
±2 mA output current
−
Software-programmable trigger type (software trigger, external digital trigger, or
analog threshold trigger) to start the analog output operation.
• Internal clock source (shared between the analog input and analog output subsystems)
• RJ45 synchronization (LVDS) connector for synchronizing acquisition on up to four
DT9837C modules