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DM502: Difference between revisions
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designers= |manuals= | designers= |manuals= | ||
* [[Media:070-1726-00.pdf|Tektronix DM502 Manual]] | * [[Media:070-1726-00.pdf|Tektronix DM502 Manual]] | ||
* [[Media:070-2693-00.pdf|Tektronix DM502A Manual]] ( | * [[Media:070-2693-00.pdf|Tektronix DM502A Manual]] (OCR) | ||
}} | }} | ||
It has an Int/Ext switch that allows alternate input connections via the rear interface to be selected. | It has an Int/Ext switch that allows alternate input connections via the rear interface to be selected. | ||
The DM502 is available with an input for temperature measurement with a transistor temperature probe ([[P6430]]) | The DM502 is available with an input for temperature measurement with a transistor temperature probe ([[P6430]]) using an NPN transistor, e.g. a 2N2484 (any NPN-Transistor with h<sub>FE</sub> >150 can be used). | ||
using an NPN transistor, e.g. a 2N2484 (any NPN-Transistor with h<sub>FE</sub> >150 can be used). | |||
The DM502'''A''' model adds an input for a PT-100 temperature probe ([[P6601]]), a True RMS converter, | The DM502'''A''' model adds an input for a PT-100 temperature probe ([[P6601]]), | ||
and offset circuits to read dB directly in all ranges. An "Option 2" instrument deletes the temperature | a True RMS converter, and offset circuits to read dB directly in all ranges. | ||
measurement function, P6601 temperature probe, and all internal circuits associated with this function. | An "Option 2" instrument deletes the temperature measurement function, P6601 temperature probe, | ||
The rear interface of DM502'''A''' is limited compared to the DM502: No current input and no reading output, see gallery below. | and all internal circuits associated with this function. | ||
The rear interface of DM502'''A''' is limited compared to the DM502: | |||
No current input and no reading output, see gallery below. | |||
The 2 kΩ measurement range (+HI in DM502A) can be used for diode testing, since a current source of 1 mA is active | The 2 kΩ measurement range (+HI in DM502A) can be used for diode testing, since | ||
and the reading corresponds to the (forward) voltage drop of the diode in Volts. The voltage can rise to a maximum of 10 V. | a current source of 1 mA is active and the reading corresponds to the (forward) | ||
voltage drop of the diode in Volts. The voltage can rise to a maximum of 10 V. | |||
A second voltmeter is needed to measure the voltage if 2 V are exceeded. | A second voltmeter is needed to measure the voltage if 2 V are exceeded. | ||
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Tek dm502 front.jpg | Tek dm502 front.jpg | ||
Tek dm502 left.jpg | Tek dm502 left.jpg | ||
DM502_switch_inside.jpg|DM502 switch with cover off. The cover removes easily using | DM502_switch_inside.jpg|DM502 switch with cover off. The cover removes easily using a Pozidrive screwdriver. | ||
Tek dm502 right.jpg | Tek dm502 right.jpg | ||
Tek dm502 leftfront.jpg | Tek dm502 leftfront.jpg | ||