Fluke 9100A Series, Manual

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9100A-017
4-10
with the UUT, try connecting the clip to another point in
the circuit or provide a buffer between the UUT and the
clip.
• When vector driving, capacitance associated with the clip
modules may alter the driving specifications slightly (all
driving specifications were obtained using the Y9100A-
102 Card Edge Interface Module). As the output speed in-
creases, there may be increasing waveform degradation.
The flying lead set (John Fluke model number Y9100-
20L) is susceptible to overshoot at higher speeds and
should not be used in systems with system clocks that run
at more than a few megahertz. Because the Vector Output
I/O Module has no overdrive capability, care should be
used in selecting where the clip is placed.
Connecting the External Lines 4.9.
The DR CLK, TRISTATE, WAIT, INT CLK, DCE, and
COMMON lines may be connected to a UUT using cables with
the module end terminated with a 0.64 mm (0.025 in.) square pin
receptacle. As the signal speed increases, good quality cabling
(such as ribbon cable, twisted pair, or coax cabling) should be
utilized to preserve signal integrity on the DR CLK, TRISTATE,
WAIT, INT CLK and DCE lines. For some applications, a
fixture may require buffering to maintain signal integrity.
Using the Card Edge Fixture Kit 4.10.
The Card Edge Fixture Kit (John Fluke model number Y9100A-
100) provides a simple means to interface the 9100 test system
to boards with card-edge connectors. The kit enables up to four
Vector Output I/O Modules to be connected to a card edge.
To provide easy connection from the UUT to the Card Edge
Fixture Kit, the Card Edge Interface Module is also recom-
mended. This module allows direct connection of all 40 pins
from the Vector Output I/O Module, along with pins for the ex-
ternal START, STOP, CLOCK, ENABLE, and COMMON
measurement control lines. The INT CLK, WAIT, TRISTATE,
DCE, DR CLK, and COMMON lines from the Vector Output