Assemble Probe And Amplifier - LeCroy AP034 Instruction Manual

H. Assemble Probe and Amplifier
²
5. Adjust Attenuator CMRR (capacitor C18A) for minimum
amplitude shift of the displayed waveform at the trigger
point in time. See Figure 10 for adjustment location.
6. Leave the setup connected for the next step.
1. Carefully slide the large probe tip cover over the probe tip,
being careful to engage the input pins.
2. Snap the small probe cover with the threaded brass insert
onto the bottom of the probe. Engage the probe cable
strain relief into the mating area of the cover. Carefully
dress the wires entering the cable to clear the area above
the brass insert.
3. Place the lip on the large end of the remaining cover under
the mating surface near the probe tip. Gently press the
cover into place. If the cover appears not to close
completely, remove it and again check for adequate
clearance between the brass insert and the cable wires.
5
4. Replace the / in. Allen cap screw and tighten.
64
5. Hold the Logic Board/Amplifier Board assembly in one
hand with the Logic board facing up. Hold the ProBus
Interface housing in the other hand with the control side
(side with holes for the buttons) facing up.
6. Align the edges of the Amplifier Board with the slots in the
center of the inside of the housing. (The amplifier board is
the thicker circuit board and has the BNC connector
soldered to it.) Slide the boards into the housing, being
careful to align the screw holes in the end cover with the
corresponding channels in the corners of the housing.
7. Insert and tighten the two screws that secure the end panel
to the ProBus interface housing. Avoid overtightening the
screws because the cover may warp.
8. Replace the four push button caps, pressing each fully to
seat the cap on the button shaft.
ISSUED: January 2000
$3 $FWLYH 3UREH
AP034-OM-E Rev D