Section Ii. System Components; Description; Micropull Iv, Major Components - Unitek MICROPULL IV MP4/115 Operation And Maintenance Manual

CHAPTER 1: SYSTEM DESCRIPTION
Section II: System Components

Description

The MP4 shown in figure 1-1, includes the Electronic Control Unit, the Beam Drive Module, Data Logging
software, the RS-232C interface and cable, a base plate, Optic Mounting Assembly, a device holder for flat
substrates, a set of calibration weights, spare fuses and this instruction manual. In addition, the user must
order a separate beam, available in 10 gram, 100 gram, or 1000 gram. Included with each beam is an
assortment of hooks, a hook insertion tool and spare lamps. Optional accessories include hooks, beams,
optics, device holders, and a serial printer.
Figure 1-1. Micropull IV, Major Components
The accuracy of the MP4 system is r2% of the reading or r2% of the beam scale, whichever is greater. For
example, the accuracy of the 10 gram beam is r0.2 grams, the 100 gram beam is r2 grams, and the 1000
gram beam is r20 grams. The conversion from grams-force to Newtons is accurate to within r2% using the
2
force of gravity as 981 gmxcm/sec . The worst case error caused by the deflection of the beam is 0.4%
which is included in the system error specification. The error caused by operator misalignment of the hook
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MICROPULL IV WIRE BOND PULL TESTER
1-2 990-180