Sole Source Justification for MS VA Tester.pdf
PDF 157 KB Posted
- Attached to
- MonCvONE perimeter update with electrophysiology software Federal contract opportunity
- Solicitation number
- NIH-SS-6870298
About this file
This document includes a sole source justification and technical specifications for a MonCvONE perimeter update with electrophysiology software. The justification seeks a perimeter with a 30 cm radius hemispheric bowl, scotopic and photopic luminance capabilities, fixation and near-infrared light sources, and bioelectric amplifiers with specific input ranges, resolutions, and filter options. The related federal contract opportunity is for the same perimeter update and software from the National Institutes of Health Office of Logistics and Acquisition Operations. The specifications require a perimeter, software, and accessories as described in the attached specification document to meet the needs of the agency.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Specs.pdf | ||
| Notice of Intent to Sole Source.pdf |
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Technical Specifications
MONCVONE STIMULATOR
Description of the supplies and services required to meet the Agency’s needs.
MonCvONE perimeter update with electrophysiology software
• hemisphere with 30 cm radius
• white background luminance: scotopic dynamic range of 7.0 log units up to 1400 cd/m2
• amber background (590 nm): up to 350 cd/m2
• white flash stimulation: up to 10 cd.s.m-2 with 5 ms duration
• blue flash stimulation (447nm) up to 60 photopic cd/m2
• red flash stimulation (655nm) up to 160 photopic cd/m2
• Fixation light sources: red 625 nm central and 15 degrees right and left
• Near infra-red illumination for video monitoring: 940 nm
BIOELECTRIC AMPLIFIERS
The amplifiers include controls for electrode impedance and for calibration.
They are designed to be placed close to the patient so as to minimize risks of interference.
Input impedance 1000 GOhms // 220 pF Input noise level from 1 to 800 Hz: 2.6 μV peak-peak from 1 to 25 Hz: 0.5 μV peak-peak
CMRR @ 50 Hz
115 dB
Input dynamic range
- 3.2 mV to + 3.2 mV
Admissible input DC offset
- 1200 mV to +1200 mV (electrode polarization)
Test of electrode impedance application of a current of 20 nA with a 25 Hz modulation (
Test of calibration injection of an input signal of calibrated amplitude
Digital resolution
0.4 μV 16 bits
High pass filter Programmable: 0.1Hz 1.0 Hz 10Hz
Low pass filter Programmable from 25 Hz up to 1200 Hz
Band reject filter Programmable 50Hz or 60Hz or none
Number of channels
HVM-AMPLI2: 2, HVM-AMPLI4:
4, HVM-AMPLI5: 5
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