DM5120
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The Tektronix DM5120 is a programmable 6½-digit multimeter plug-in for the TM5000 system.
The DM5520 is a standalone version, i.e. a DM5120 in a dedicated, fan-less, mainframe based on the TM503B.
Key Specifications
Resolution | ±3,029,999 counts (6½ digits) in DC Volts and Ohms, 5½ digits otherwise in fast mode |
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Voltage ranges | 300 mV to 300 V in decade steps, DC or AC |
Input Impedance (DC Volts) |
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Input Impedance (AC Volts) | 1 MΩ // 120 pF |
Current ranges | 300 μA to 3 A in decade steps, DC or AC |
Resistance ranges | 300 Ω to 300 MΩ in decade steps, 4-wire mode available in 300 Ω to 30 kΩ ranges |
Features |
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Internals
The DM5120 shares its analog section design with the Keithley 196, minus the front/rear switch.
The instrument's internal voltage reference is based on the LM399.
Pictures
Parts
Some Parts Used in the DM5120
Part | Part Number(s) | Class | Description | Used in |
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AD637 | Monolithic integrated circuit | Wideband RMS/DC converter | DM5120 • DM5520 | |
LM399 | Monolithic integrated circuit | Heated zener reference | DM5120 • DM5520 | |
Motorola 6809 | 156-1494-00 • 156-1494-01 | Monolithic integrated circuit | 8-bit microprocessor | 2424L • 2440 • 7D20 • DM5120 • DM5520 |
TMS9914 | 156-1444-00 • 156-1444-01 | Monolithic integrated circuit | GPIB controller | 2221 • 2230 • 2424L • 2440 • 4052A • 4054A • 021-0374-00 • 067-1137-99 • DC5009 • DC5010 • DM5010 • DM5120 • DM5520 • MI5010 • SG5010 • SG5030 • SI5010 • PS5004 • PS5010 |