Signal Delay

Signal Delay

Signal Delay

Item# Description U.S. List Price Quantity
65-0244 NL202 AC Signal Delay
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The NL202 is an analog signal delay unit, utilizing a ‘bucket-brigade’ delay line. It offers several advantages over the NL741 Analog Delay such as low cost, and an almost continuous representation of the delayed signal (the NL741 uses an 8-bit AD converter, which results in a more obvious stepped representation at its output). Unlike the NL741, however, the NL202 (due to limitations in bucket-brigade delay lines) cannot produce delays over a range greater than 50 msec; nor can it be used for very low frequency (DC to 5 Hz) signals. In spite of its apparently continuous output, the signal delay in the NL202 is achieved by sampling the input signal at regular intervals and shifting these samples through a memory with a finite (512 stages) number of locations. This results in a fixed relation between output bandwidth and the delay (15 kHz for a 0.5 msec delays, 1.5 kHz for 5 msec delays, and 150 Hz for 50 msec delays, with a good sine wave output). Thus the NL202 is ideal for use with the NL201 Spike Trigger for visualizing the entire waveforms of amplitude-discriminated spikes, or for producing pre-triggered averages of AC signals (consistent with its limited delay range). The NL741, with its wider delay range will still be required for other delay line applications.
Specifications65-0244
Attached Printed Circuit Board Dimensions H x W English4.0 x 6.0 in
Attached Printed Circuit Board Dimensions H x W Metric102 x 152 mm
Delay Range0.5 to 50 msec in two switched stages
Front Panel Dimensions H x W English4.8 x 1.2 in
Front Panel Dimensions H x W Metric122 x 30 mm
Input Dynamic Range60 dB
Input Impedance100 k?
Input Voltage Range
ModelNL202
Output Frequency Response5 Hz to 150 Hz (max delay), 5 Hz to 15 kHz (min delay)
Output Gain+1.0 (