Related Publications
8500C/8500C+ System Maintenance Manual 1-11
Speed 1 spectrum per 3 seconds with 30,000 rpm range
(varies with Fmax).
Averaging (in balance mode only) 8 most recent balance measurements averaged
excluding measurement outside one average
deviation
Phase accuracy +
2.0 degrees (electrical)
Phase measurement method Synchronizing input (magnetic pickup or photocell
pickup), FasTrak optical tracker, or Strobex
Corrective action presentation Arbitrary vibration reduction action, e.g. blade
sweep, weight addition/subtraction, pitch-link
shortening/lengthening, etc. System undergoing
vibration reduction is displayed for reference.
Changes are specified in aircraft specific units.
Multiplane balance capabilities with Smart chart
software, i.e., multiple corrective actions presented
for multiple measurements.
Timing resolution +
200 nanoseconds
Amplitude accuracy 15% depending on frequency offset from FFT BIN
center (includes effect of window)
Input power: printer/disk drive 12 to 28 VDC (28 VDC nominal)
Operating temperature: printer/disk drive -10°C to +55°C
Printer Dot-matrix thermal printer
Mass storage PC/MS-DOS version 3.X compatible, 3.5 inch
double-sided, double-density disk drive (720 KB).
8500C+ can also use 1.44 MB HD disk.
Dimensions 10.81 x 7.5 w x 4.0 h in. (27.4 1 x 19.1 w x 10.2 h
cm)
Weight 7.1 lbs (3.22 kg)
8520C Signal Selector
Input power 28 VDC
Velocimeter signal input levels 12 Channels, 0 to 375 ips
Input impedance 100K (unselected channel), 2.5K (selected channel)
Magnetic pickup signal inputs 4 channels, 0 to 12x10
6
rpm
Table 1-4. Leading Particulars
8500C/C+ Balancer/Analyzer
Parameter Characteristic
(Continued)
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