Unitek 6-099-04, Operation And Maintenance Manual

Page: 38 / 88

CHAPTER 3: OPERATING INSTRUCTIONS
MICROPULL
®
IV WIRE BOND PULL TESTER
3-10 990-180
3 The "Date" entry displays the DOS System date. If the date is incorrect, return to DOS and change it
using the DOS Command DATE.
4 Press <F9> to select communications port #1 or #2. The software will open the communications port
even if the MP4 is not connected to the computer because the status of the "Request To Send" and
"Clear To Send" lines are ignored.
5 Press <F9> to toggle the contents of the "Destruct or Non-Destruct Test (D/N)" field between N and D.
The software will only allow the user to enter responses that are appropriate for the specified mode. The
Non-Destruct Pull Limits are erased whenever the Destruct Mode is selected.
6 The test limits for the Non-Destruct Mode are shown in table 3-1.
Table 3-1. Test Limits for Non-Destruct Mode
Beam Units Test Limits
gf 0.5 – 10
B10
mN 5 – 100
gf 0.9 – 100
B100
mN 9 – 1000
gf 40 – 1000
B1000
N 0.4 – 10
gf 80 – 1999
B2000
N 0.8 – 19.9
7 The Maximum Non-Destruct Test Limit must be at least 1 count higher than the Minimum Test Limit.
The recommended minimum is 2 counts.
8 A "Y" in the "PRINT ALL DATA" field will cause the software to print all of the data transmitted by
the MP4. An "N" response will result in the Non-Destruct software printing only that data which is
outside the limits defined by the contents of the Non-Destruct Minimum and Maximum Test Limit
fields. An "N" will inhibit printing in the DESTRUCT Mode provided the contents of the "Echo Data to
a Disk File" field, on the next screen, contains a "Y".
9 In the NON-DESTRUCT Mode, a "Y" in the "Accept Failure Location Codes" field will cause the
program execution to stop after each bond that fails to meet the Test Limits and wait for the operator to
enter a six-digit location code to facilitate the inspection and/or repair of these bonds. In the Destruct
Mode, a "Y" will cause the program to wait for the operator to enter a single numeric Failure Location
Code, between 1 and 8. The codes listed are taken from MIL-STD-883B.
10 In the DESTRUCT Mode, a "Y" in the "Load Histogram History File" field instructs the software to
load the Histogram History File. That file, named "PULLS.TXT," is located in the \MP4 Subdirectory
on Drive C. If this file does not exist, the software will create it. This file contains 261 entries that
contain the number of tests with bond pull strengths within the 0.5% pull range represented by that