Lakeshore 340 Installation Instructions

Model 340 Input Option Card Installation
Field Installation
Input option card kit:
(1) 10-conductor ribbon cable
(1) Option card
(4) 32 mm (1.25 in) metal standoffs
(8) 4-40 machine screws
OFF ON
120
! WARNING
NO USER SERVICEABLE PARTS INSIDE. REFER FOR CONT5INUED PROTECTION AGAINST FIRE HAZARD,
SERVICING TO TRAINED SERVICE PERSONNEL. REPLACE FUSE WITH SAME TYPE AND RATING.
LINE -10% +5% 100 / 120 220 / 240
FUSE
50-60 Hz 2.0 A 1.0 A IEEE-488 INTERFACE
DATA
175 VA MAX .25x1.25in SB 5x25mm SB
S SERIAL I/O
H1 AH1 T5 L4 SR1 RL1 PP0 DC1 DT0 C0 E1
Figure 1. Cover and Option Plate Screws
Figure 2. Model 340 Mounting Holes
and Analog Option Plug
Tel: (614) 891-2244 Fax: (614) 818-1600 e-mail:
F023-07-00
! WARNING
DIGITAL I/O
Lake Shore Cryotronics, Inc. 575 McCorkle Blvd Westerville, Ohio 43082
These instructions apply to 3462,
3464, 3465, and 3468 option cards
Required tools: Small Phillips-head screwdriver and
5/64-inch Allen wrench
CAUTION: The components on this board are
electrostatic discharge sensitive (ESDS)
devices. Wear shock-proof wrist straps
(resistor limited to <5 mA) to prevent injury to
service personnel and to avoid inducing an
electrostatic discharge (ESD) into the device.
1. Turn Model 340 power switch OFF. Unplug power cord
from wall outlet, then instrument.
2. Stand the unit on its face. Use the Allen wrench to
remove the 4 screws on each side of the covers
(Figure 1).
3. Use the small Phillips screwdriver to remove any top
and bottom cover screws; instrument may have 1 or 2
screws on the top and bottom covers.
4. Remove rear plastic bezel. The covers are tracked.
Slide the top and bottom covers to the rear on the
tracks to remove them.
5. Remove rear panel option plate screws and set aside.
Remove rear panel option plate.
6. With the instrument still standing on its face, turn it to
view the inside circuit board. The upper half of the
circuit board above the transformer assembly contains
four holes where metal standoffs install (Figure 2).
Find Hole #1 to the left between C245 and C265.
Find Hole #2 114 mm (4.5 in) to the right of Hole #1,
and just to the left of C298 and U154.
Find Hole #3 114 mm (4.5 in) to the right of Hole #2,
and just to the left and below the Digital Option plug
(J9).
Find Hole #4 64 mm (2.5 in) above Hole #3, just to the
left and above the digital option plug (J9). Ignore hole to
left and beneath Hole #4.
Into each hole, insert a 4-40 screw through the bottom
of the circuit board, and thread it into a metal standoff
on the top of the circuit board.
service@lakeshore.com www.lakeshore.com
Revision A 1/24/2008