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NOTE: This User’s Manual was as current as possible when this product was manufactured. However, products are constantly being updated and improved. To ensure you have the latest documentation, refer www.tegam.com 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
10 G 10 M 100 G 100 M Table 1: Specifications Accuracy: Resistance accuracy on all ranges: ± 5% Test Voltage accuracy on all ranges: ± 3% 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
A LED is provided to indicate that the test voltage is on. is a 3 ½ digit LCD, displaying readings from 1.999 DISPLAY to 199.9. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
The R1M-A should be stored in a relatively dust-free environment. Temperature: -40 °C to +71 °C. Relative humidity: 0 to 100%, non-condensing. Altitude: 4570 m See Section 5.7 below for shipping requirements. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
Do not measure resistors less than 50 kΩ with the R1M-A; it may damage the instrument. WARNING SHORTING THE ‘TEST’ and ‘SIGNAL’ LEADS TOGETHER WILL CAUSE INSTRUMENT DAMAGE. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
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The shorting link on the GROUND binding post may be swung around and connected to the GUARD binding post to ground the R1M-A circuitry. This may be done only if there is no external voltage with respect to ground on the measured resistor or guard.
ENERGIZED COMPONENT COULD CAUSE SERIOUS HARM TO THE OPERATOR AND/OR DAMAGE THE R1M-A. BE SURE THE ITEM TO BE MEASURED IS DISCONNECTED FROM OTHER COMPONENTS AND APPARATUS. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
Ohm's law and displays it on a 3 ½ digit display. To obtain the best accuracy, allow the R1M-A to warm up for 15 to 30 minutes before making measurements. In any case, a minimum warm-up of 30 seconds is advised.
If so, they will be charged during ‘TEST’, but discharged automatically as soon as S3 is released. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
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However, if the test voltage is increased, the signal current and the voltage output of U3 will increase. To compensate for this, the amplifier section of U1 having pins 1, 2, and 3 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
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U4. S2B provides the proper logic levels to the quad exclusive-or gate U6 to locate the decimal point on the display. R33, 34 and 35 are pull-down resistors. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
0.1% or better. A standard digital voltmeter: 3 ½ digits minimum, with 19.99 and 999 V ranges, accuracy of 0.02% of reading or better. HP/Agilent 34401A or equivalent. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
50 V and then with 500 V (but DO NOT CHECK THE 50 kΩ AT 500 V). All readings must be within 5% of the actual value. If not, adjust the trimpots as described below. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
TOUCH ANYTHING EXCEPT THE SCREW ADJUSTMENT OF R32! Adjust R32 for 0 ± 0.1 V on the voltmeter. Turn the power off and remove the voltmeter leads. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
Note that even with the TEST button released; high voltage still exists between the transformer secondary and R37. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
Adjust R14. too high or too Table 2: Fault Symptoms and Repair Actions After trouble-shooting and repair, the instrument must be recalibrated in accordance with 5.5 above. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
5.8 Overhaul Instructions The R1M-A is an all solid-state unit and requires no periodic overhaul, other than routine cleaning, inspection of cables per section 5, and calibration per section 5.5.
Power Switch Test Voltage Range Switch Ohms Range Switch Test Voltage Jack Signal, Guard & Ground Binding Posts Voltage Present Test Pushbutton Figure 2: Front Panel Controls 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
Once this information is prepared and sent with the instrument to our service department, we will do our part in making sure that you receive the best possible customer service and turnaround time possible. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
When is the problem most frequent?, has anything changed with the application since the last time the instrument was used?, etc. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
Repaired products are warranted for the remaining balance of the original warranty, or 90 days, whichever period is longer. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
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TEGAM specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. In no event will TEGAM be liable for special or consequential damages. Purchaser’s sole and exclusive remedy in the event any item fails to comply with the foregoing express warranty of TEGAM shall be to return the item to TEGAM;...
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