User Manual

Mechanical specifications and mounting needs: Mounting the RIM 801D

RIM 801D OEM Radio Modem – Integrator’s Guide

Please be aware that because VHB is a permanent adhesive, the radio

modem cannot be removed once it is installed. Attempting to break the

adhesive bond by twisting off the radio modem will certainly damage the

unit. There is no known solvent that will remove VHB. If using VHB as your

adhesive, please make sure that you will not need to remove the radio

modem after it is installed. Otherwise, the use of a reclosable fastener is

recommended.

More information about VHB may be obtained by contacting 3M Industrial

Tape and Specialties Division. The publication number for the VHB

technical data sheet is 70-0702-0266-1(104.5)R1. Please refer to -

Appendix II for complete contact information.

Reclosable Fasteners

A reclosable fastener may be used to affix the RIM 801D to a surface. The

use of such fasteners is useful if the radio modem might be removed at some

point during the product’s life. For example, the RIM 801D can be installed

in a housing with no need for the end user to remove the radio modem, but

the product manufacturer might later wish to do so.

The choice of reclosable fastener is governed by two factors. The first is the

strength of the closure. The fastener should ensure that the closure will last

long enough so the radio modem will not accidentally separate from the

housing of the embedded system. The second consideration is the number of

times the radio modem will be removed and refastened.

Two lines of Velcro-like reclosable fasteners are offered by 3M: Scotchmate

and Dual Lock. Scotchmate is a plastic hook and cloth loop fastening

system, the use of which is inappropriate to this application because it is

expected that the radio modem would eventually come loose. Dual Lock is a

sturdier, more rugged design that is appropriate to this task. The use of Dual

Lock, alone or in combination with Scotchmate, offers excellent fastening

while retaining the capability of removing the RIM 801D.

Different applications have different fastening needs. The combinations

suitable to most applications are outlined below:

• Attaching the RIM 801D to a rigid surface. The use of Type 400

Dual Lock with Type 170 Dual Lock is a universal combination,

suitable for most situations where the RIM 801D is affixed to a

rigid surface. (The “Type” number, 400 or 170, refers to the

number of interlocking mushroom-shaped stems per square inch.)