Manual

Chapter 4 SQM-142 Card
4-5
4.6 SQM-142 Specifications
Sensor Inputs ...................................................................4 (BNC)
Input Frequency................................................................1 to 10 MHz
Input Type........................................................................Active Oscillator
Sample Period...................................................................1 to 2 sec.
Thickness Resolution*........................................................2Å @ .25sec.
.025Å @ 2sec.
Thickness Accuracy*..........................................................5% + 1 count
Control Outputs................................................................2 (dual phone jack)
Output Voltage..................................................................0 to ±10VDC
Output Resolution.............................................................15 bits
Output Impedance ............................................................1 Kohm
Computer Interface
Interface Type ..................................................................16 bit ISA
IRQ Select........................................................................5, 10, 11, 12, 14, 15
Address Select .................................................................140, 180, 1C0, 220
• Density=1, Z-Factor=1, Sensor Freq.=6MHz