FTB # 6: 30-0121-2 Multi-level Supervised Input Module

SYSTEM SUPPORT SERVICES
11046 State Road 52, Hudson, FL 34669 ● (727) 243-3656

FIELD TECHNICAL BULLETIN # 6

SCOPE

Product(s) Affected:	Multi-level Supervised Input Module

Model or Part Number(s):	30-0121-2

Release Date:	November 7, 1988 (Originally Released by COMPUTROL)

Subject:	Firmware Revision A1 and Hardware Revision C1

BACKGROUND

A problem has been discovered in Revision A and earlier 30-0121 Multi-level Supervised Input Modules. This problem involves the detection ranges for normal, access, and supervision alarm conditions. The problem exists in -2 versions of the board only.

The detection ranges for the board are such that it is possible to place certain values of resistance across the lines, without causing the board to detect a "tamper", then open switch S1 without the board detecting the access. Also, it is possible to open switch S1, then ground the low side of the line. This will cause the board to think the switch has been closed, when in fact it hasn't.

SOLUTION

COMPUTROL has corrected this problem by tightening up the detection range table, and by changing the value of resistor R-19 on the board from a 2.49 K ohm, 1/4 watt, 1% resistor to a 1.27 K ohm, 1/4 watt, 1% resistor. Implementing this fix may require re-calibration of the board's current source. The firmware revision for all versions of the 30-0121 should be Revision A1 or later.*

This firmware revision also incorporates the fix for the "out-of-sequence" problem. Refer to Field Technical Bulletin # 4 for a description of this problem.*

* NOTE:

SYSTEM SUPPORT SERVICES has since released other firmware revisions for the 30-0121 Multi-level Supervised Input Module. Please check the other FTBs on this site for later releases and updated information.

RECOMMENDATIONS

It is recommended that all boards be upgraded as soon as practical. There are three alternative approaches to implementing the Revision A1 firmware update:

The modules can be sent to SYSTEM SUPPORT SERVICES for retrofit. The cost to update the firmware and fully test, align, and repair the unit as necessary is $ 359.00 per board.

EPROMs can be purchased from SYSTEM SUPPORT SERVICES to perform the rework. The price of a parts kit to update one board is $ 49.00, and includes all documentation necessary to install and test the update.

A site license may be purchased for $ 1,900.00. The site license includes 3 copies of the EPROM to use as masters, all necessary documentation to install and test the update, and a limited use license which permits the site to make unlimited copies of the firmware for its own internal use.

ORDERING INFORMATION

To have SYSTEM SUPPORT SERVICES repair, test and update the modules as necessary, contact Customer Service for a Return Material Authorization number. Have available the part number of the module to be repaired and upgraded, and the quantity.

To order individual copies of the firmware, or to order a site license, please use the following part numbers:

FIM PART NUMBER	INDIVIDUAL EPROM PART NUMBER	SITE LICENSE PART NUMBER
30-0121-2 ¹	80-2200B ^1,2	88-2200B ^1,2

When installing P/N 80-2200B firmware on a 30-0121-2 FIM, resistor R19 must be changed from a 2.49K, 1/4 W, 1% resistor to a 1.27K, 1/4 W, 1% resistor. This will bring the hardware revision level of the board to C1.
This document is a reprint of an original COMPUTROL Field Technical Bulletin. There is a new revision level for this firmware, which was released by SYSTEM SUPPORT SERVICES. Please refer to FTB # 11, 30-0121-2 Firmware Rev. C and Part Number Change.

 E-mail: service@sysupport.com

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TEL: (727) 379-0484

FAX: (727) 379-0831

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Revised: April 25, 2006 .