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MDS-4 PROFESSIONAL DEGAUSSER

The MDS-4 Professional Degausser is designed to handle all formats of cassettes and tape reels up to 16 inches in diameter. The MDS-4 operates continuously without overheating in the low field strength setting and intermittently in the high field strength setting. In low, the MDS-4 erases formats such as VHS, diskettes and audiocassettes. In high, the MDS-4 will erase 1” reels, U-matic, S-VHS, DAT and 8mm. The MDS-4 can erase tapes with coercivities up to 950 oersteds with widths up to 1 inch and 1500 oersted tapes with widths up to 8mm.

Will not erase hard drive

Degausser Features:

• Fast, safe, clean erasure.
• High / Low field strength switch allows continuous duty erasing on the low position and intermittent duty erasing on high.
• Silk-screened instructions for simple operation.
• Automatic cooling fan increases duty cycle
• Conservative design assures long reliable performance
• Strong horizontal and vertical degaussing fields ensure complete erasure
• Lightweight, compact design.
• Automatic thermal shutt-off.
• Optional removable hub for erasing reels.
• One year warranty

Specifications:
 

Power Requirements	10A @ 120 VAC, 60 Hz Circuit (15A minimum Branch circuit required) 10A @ 230 VAC, 50 Hz
Protection	Fused circuit, automatic thermal shut down
Controls	On/Off automatic timer switch, High / Low field strength setting
Indicators	Lighted On/Off main power lamp, Lighted overhead & temperature lamp
Cooling	Automatic fan system and vented enclosure
Run Time	10 minutes (cold start) high field setting, Continuous low field setting
Options	Media positioning adapter
Field Strength	Low- 2000, High – 2500
Dimensions	L17 x W13 x H6 in. (33 x 43 x 15.5 cm)
Weight	Net 42 lbs (19.5Kg), Shipping 48 lbs (21.7 Kg)

ATTENTION WHEN DEGAUSSING:

Please note the following suggestions when using a degausser:

Watches:

Remove your wristwatch when using the degausser. Direct exposure to the magnetic field may damage some watches.

Magnetic Strip Cards:

Do not place your wallet or purse containing credit or phone cards directly on or above the conveyor belt. Magnetic strip cards are very easy to erase. However, having a wallet in your back pants pocket while using the degausser will not erase the cards.

Tape storage:

Store videotapes you do not intend to erase approximately four feet from the degausser. This will eliminate the opportunity for the operator to accidentally run “good” tapes through the degausser.

Placement of Tapes:

When erasing tapes, place them on the left edge of the belt (as you face the machine). In order they may travel the full length of the conveyor belt for quality erasure.

Pacemakers:

Do not operate the degausser if you have a pacemaker.

ABOUT DEGAUSSING MAGNETIC MEDIA

An alternating current (AC) bulk eraser (degausser) is used for complete erasure of data and other signals on magnetic media. Degaussing is a process where magnetic media is exposed to a powerful, alternating magnetic field. Degaussing removes any previously written data, leaving the media in a magnetically randomized (blank) state.

The degausser must subject the media to an alternating magnetic field of sufficient intensity to saturate the media. Then the degausser by slowly withdrawing or reducing the field leaves the magnetic media in a magnetically neutral state.

To erase recorded data, it is necessary for the strength of the degaussing field to be greater in value than the coercivity of the magnetic media. Simply stated, coercivity is the magnetic field strength, rated in oersteds (Oe), required to change the magnetic orientation of the magnetic material. Check with knowledgeable dealers or degausser manufacturers to identify degausser models that meet your requirements. Examples of typical coercivities for computer magnetic tapes and disks are shown in table I.

Data is typically not lost until its level has been decreased 65% to 75% (or more) below its original saturation recording signal level, dependent upon the drive system.

A complete erasure level, for most users, is considered to be 60 dB below the original signal level – this of course depends on user requirements. A 60 dB signal decrease equates to reducing the signal to one tenth of one percent of its original value.

Magnetic media products that have factory pre-recorded magnetic servo patterns should not be degaussed. Degaussing would erase the factory written magnetic servo signals and leave the media unusable. For all other magnetic media (without magnetic servo signals), after proper degaussing, the quality of subsequent data recording should be unchanged or even improved.

It is very important to understand and follow the degausser’s operating instructions. This is especially important for manual units where the operator controls the media’s movement through the degaussing field. For higher coercivity media, four passes are often recommended – two passes, with a 90 degree rotation for the second pass, and then repeat the process with the media turned upside-down. Of course, these and other important operating considerations will vary with the type, power and construction of the individual degausser models.

DEGAUSS STRENGTH REQUIRED

MAGNETIC TAPE PRODUCTS	TYPICAL COERCIVITY	COMMENTS
9-Track Reel-To-Reel Computer Tape	300 Oe
TK50, TK70	350 Oe
3480, 3490 OE	520 Oe
SLR1, SLR2, TR-1, DC2120, DC6150	550 Oe
SLR3, SLR4, SLR5, TR-3, DC9100	900 Oe
SLR24, SLR32, TR-4, ADR30, ADR50	900 Oe	Do Not Degauss, See Note 1
TR-5, SLR40, SLR50, SLR60, SLR100	1650 Oe	Do Not Degauss, See Note 1
DLTtape III, DLTtape IIIXT	1540 Oe
DLTtape IV	1850 Oe
SuperDLTtape1	1900 Oe
D8: 8mm 112m, 8mm 160m	1600 Oe
DDS1: 4mm 60m, 4mm 90m	1590 Oe
DDS2 4mm 120m	1750 Oe
DDS3 4mm 125m	2250 Oe
DDS4 4mm 150m	2350 Oe
DD-2 19mm	1550 Oe
DD-2QD (Quad Density) 19mm	1850 Oe
DTF-1	1579 Oe
DTF-2	2300 Oe
Redwood SD-3	1515 Oe
Magstar MP: 3570-B, 3570-C, 3570-C/XL	1625 Oe	Do Not Degauss, See Note 1
Magstar: 3590, 3590-E	1600 Oe	Do Not Degauss, See Note 1
STK-9840, STK-T9940	1625 Oe	Do Not Degauss, See Note 1
LTO-Ultrium1	1850 Oe	Do Not Degauss, See Note 1
Mammoth 8mm, AIT-1 8mm, VXA-1 8mm	1320 Oe
AIT-2 8mm	1380 Oe
M2 Mammoth2 8mm	1350 Oe

MAGNETIC TAPE PRODUCTS	TYPICAL COERCIVITY	COMMENTS
3.5” 720KB DD Microdisk	650 Oe
3.5” 1.44MB HD Microdisk	720 Oe
5 ¼ 360 KB DD Minidisk	300 Oe
5 ¼ 1.2Mb HD Minidisk	650 Oe
Zip 100 MB Disk	1550 Oe	Do Not Degauss, See Note 1
Zip 250 MB Disk	2250 Oe	Do Not Degauss, See Note 1
SuperDisk 120MB	1500 Oe

* NOTE 1: DO NOT DEGAUSS

This product has factory prerecorded magnetic servo tracks. The media will be unusable, if the servo tracks are bulk erased (degaussed). Products that use factory prerecorded magnetic servo signals should not be degaussed unless destruction of the recording media is desired.

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