7D13: Difference between revisions
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manufacturer=Tektronix | type=7D13| | |||
summary=3½ digit Digital Multimeter| | summary=3½ digit Digital Multimeter| | ||
image=Tek 7d13 front2.jpg | | image=Tek 7d13 front2.jpg | | ||
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introduced=1971 | | introduced=1971 | | ||
discontinued=1987 | | discontinued=1987 | | ||
series= | series=7000-series scopes| | ||
manuals= | manuals= | ||
* [[Media:070-1096-00.pdf|Tektronix 7D13 Service]] (OCR, PDF) | * [[Media:070-1096-00.pdf|Tektronix 7D13 Service]] (OCR, PDF) | ||
Revision as of 04:07, 9 August 2021
The Tektronix 7D13 is a digital multimeter plug-in for 7000-series scopes with CRT readout. It will function in any compartment. There is no analog output signal presented on the CRT; therefore, it is not necessary to select the 7D13 with the oscilloscope Vertical or Horizontal Mode switches.
The input section is galvanically isolated, allowing the input to float ±1500 volts with respect to chassis ground.
Key Specifications
| Functions | DC Volts, DC Current, Resistance, Temperature |
|---|---|
| Voltage Ranges | 1.999 V, 19.99 V, 199.9 V, 1000 V (max. 500 V via P6058) |
| Input impedance | 10 MΩ |
| Current ranges | 1.999 mA, 19.99 mA, 199.9 mA, 1999 mA |
| Resistance ranges | 199.9 Ω, 1999 Ω, 19.99 kΩ, 199.9 kΩ, 1999 kΩ |
| Temperature | 7D13: -55 °C to +125 °C, requires P6058 voltage/temperature probe or P6430 temperature probe 7D13A: requires P6601 PT-100 probe |
Internals
The 7D13 consists of an analog pulse width modulator front-end built with 741 op amps and dual FETs, and a 3½ digit counter section using standard 74xx TTL parts which is interfacing with the readout system (through a 155-0038-00 D/A converter). The front end is isolated by transformers used for pulses and a floating ±15 V supply. The Probe jack for the P6058 (a 4-pin LEMO S-series connector) has contacts for the temperature sensor (a diode-connected transistor) as well as the voltage input terminals.
Links
Pictures
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from manual
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