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Cygnus 2 Operating Manual
1.4 Cygnus 2 Specifications
1.4.1 Measurement
Crystal Frequency . . . . . . . . . . . . . . . . . . . . 6.0 MHz (new crystal) to 4.5 MHz
Internal Precision . . . . . . . . . . . . . . . . . . . . . ±0.0035 Hz over 100 ms sample for
fundamental and anharmonic
frequencies
Thickness & Rate Resolution . . . . . . . . . . . . 0.0042 Ã… (new crystal);
0.0076 Ã… (crystal @ 4.5 MHz) over
100 ms sample for material density =
1.0,
Z-Ratio = 1.0
Thickness Accuracy . . . . . . . . . . . . . . . . . . . 0.5% typical, (dependent on process
conditions, especially sensor
location, material stress, temperature
and density)
Frequency Accuracy. . . . . . . . . . . . . . . . . . . ±2 ppm 0-50°C
Measurement Frequency . . . . . . . . . . . . . . . 10 Hz
Measurement Technique . . . . . . . . . . . . . . . ModeLock with Auto-Z
User Interface. . . . . . . . . . . . . . . . . . . . . . . . LCD and limited membrane keypad.
All parameters accessible through
computer communications. Multiple
message areas for indication of
states and detailed indication of
abnormal and stop conditions.
1.4.2 Screens and Hierarchy
a) Navigation . . . . . . . . . . . . . . . . . . . . . . . . Menu driven, four soft keys
b) Structure. . . . . . . . . . . . . . . . . . . . . . . . . . Separate screens dedicated to
1) Operate
2 ) S e n s o r I n f o r m a t i o n
3) Se ns or Par am ete rs
4) So ur ce Par am ete rs
5) Material Parameters
6) General Parameters
7) Digital I/O Display
8) Logic
9 ) M ain te n a n c e
10) Counter/Timer
11) USB Storage
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