5. Be sure the G terminal on the Model 17B is connected to the
computer chassis ground or an appropriate alternate ground.
D. If channel 0 of the multiplexer is always read regardless of
which channel of the Model 17B is selected by the output
control lines, check to be sure that the Guard pin on the A/D
card is connected to the G terminal on the Model 17B.
SECTION 4. SPECIFICATIONS
SIGNAL INPUTS: 16 channels
Both plus and minus inputs
are switched
SIGNAL INPUT RANGE: +/- 5.5 volts
SWITCHING TIME: 0.5 ms maximum
SWITCH RESISTANCE
TYPICAL: On resistance 20 K ohms
Off resistance 100 Megohms
INPUT PROTECTION: All inputs protected against
overvoltages of up to 130 volts
transitory or 60 volts continuous
CONTROL INPUTS: Fully compatible with all
Lawson Labs A/D cards
TYPICAL CONTROL
INPUT CURRENT: 0.06 milliamps
Active low
POWER REQUIREMENT: 115 VAC, 6 Watts
SIZE: 6.25 x 3.75 x 2 inches
LIMITED WARRANTY
The Lawson Labs Inc. Model 17B Differential Multiplexer is
guaranteed against defects in materials and workmanship for a
period of one year from the date of delivery. Products must be
returned to Lawson Labs for warranty service. Contact Lawson Labs
at 800 321-5355 for return authorization before returning
anything for service.
The above warranty is in lieu of all warranties express or
implied. Lawson Labs, Inc. will not be liable for indirect or