Scientific Solutions ^® Inc.

LabMaster ^® SM64 Analog Input

LabMaster SM64 (Front View showing the Four DB25 Analog Input connections)

The LabMaster SM64 DeskTop unit is used by SandMan and other applications to provide from 16 up to 64 Analog Input channels. On the front of the unit are four DB25 connectors, each connector providing 16 Analog Inputs. On the back of the unit is a high density connector to cable to the LabMaster AD/ADEX (ISA cards) or LabMaster PRO (PCI card) that is installed in your computer. Internal to the unit are low-noise analog multiplexor circuits that provide analog signal expansion in addition to +/- 35volt input signal protection and low 100 pico-amp input bias current.

This product is useful for anyone who wants convenient DB25 style connections for Analog Input signals for their LabMaster AD, LabMaster ADEX or LabMaster PRO data acquisition system. For sleep diagnostic centers, a typical use is to connect the output from your amplifiers to the DB25 input connections on the front of the LabMaster SM64.

For example, if you have a sleep lab using Grass Amplifiers and two beds you could have a cable with a DB37 connection on one end and two DB25 connections on the other end (cable would be a 'Y' configuration). The cable end with the DB37 would connect to the Grass Amplifier outputs and the cable end with the two DB25 would connect to the Analog Inputs on the front of the LabMaster SM64 unit. This example allows the LabMaster card in the computer to monitor two beds simultaneously. With this approach, a single LabMaster SM64 can be used for a 4 bed installation.

The LabMaster SM64 provides the following features:

64 Analog Input connections
- Increases the number of Analog Inputs from 16 to 64
- Conveniently arranged as 16 Analog Input signals per each DB25

Additional protection to the Analog Inputs on the LabMaster AD/ADEX or LabMaster PRO
- Helps to protect the LabMaster card from damage due to improper signal levels

Allows easy connection to 4 beds in a sleep lab
- One standard DB25 connection per bed
- Single high density quick-connect cable connection to LabMaster card

Small DeskTop unit
- Convenient small DeskTop size, only 2" high by 11" wide by 7" deep (51 mm by 279 mm by 178 mm)

Technical Specifications


Resolution	16-bit
Input Range	±10V
Conversion Time	3µSec.
Channel Count	16 to 64
Input Bias Current	100pAmps
Input Source Current	< 10Kohms
S/(N+D)	93dB typical
THD	-100dB typical
Low Drift Voltage Reference	2 ppm/ºC
Gain switching time	500 nSec.
Gain Non-linearity vs. Temp	0.0003%
Input Protection	±35 volts

LabMaster SM64 (back view showing high-density connector)

Specifications subject to change without notice.

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Scientific Solutions ® Inc.

LabMaster ® SM64 Analog Input

Technical Specifications

Scientific Solutions ^® Inc.

LabMaster ^® SM64 Analog Input