Seagate ST212 - 9.2 Test Point Data: PC Board 20243-XXX; 9.2.1 Differential Read Filter: Test Points 1 and 2

FIGURE 32:
Test Point Locations
PC Board 20243-XXX
TEST POINT DATA: PC BOARD 20243-XXX
DIFFERENTIAL READ FIL TER: TEST POINTS 1 AND 2
9.2
9.2.1
These points may be used to monitor Differentiai Read Data. The typical am-
plitude
of the signal resulting from adding the two channels is 160 mVolts. The
signal
is observed at Cylinder Zero, head 0 or 1. A full track record of high fre-
quency
data (0000 or 1111) will typically resemble Figure 30.
ST212 PRODUCT MANUALIRev. B
35