213

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Miniature portable 1 MHz oscilloscope and TRMS digital multimeter Tektronix 213, front view Produced from 1975 to 1988 Manuals Tektronix 213 Service Manual, 1989 Rev. (PDF, OCR, 76MB) (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 213 is a miniature portable oscilloscope introduced in 1975. It combines a 3½-digit DMM and a 1 MHz single channel scope in one unit. The maximum sweep rate is 0.4 μs/div with ×10 sweep magnifier.

The 213 provides true RMS voltage and current measurements. It is battery or AC line powered.

Key Specifications

	— Multimeter Section —
DC Volts	0.1 V to 1000 V, Input Resistance: 10 MΩ Accuracy, 0.1 V & 1 V: ±0.1%, ±3 counts; 10 V & 100 V: ±0.15%, ±1 count; 1000 V: ±0.2%, ±1 count
True RMS Volts	DC Volts
DC Current	0.1 to 1000 mA Accuracy: 0.1 mA: ±0.5%, ±3 counts; 1 mA – 1000 mA: ±0.25%, ±3 counts
True RMS Current	0.1 to 1000 mA Accuracy, 0.1 mA: ±2.5%, ±5 counts (DC); ±1.5%, ±5 counts (40 Hz – 4 kHz); ±4.5%, ±5 counts (4 kHz − 40 kHz); 1 mA – 1000 mA: ±2.5%, ±5 counts (DC); ±1.5%, ±5 counts (40 Hz – 4 kHz); ±3.5%,±5 counts (4 kHz − 40 kHz)
Current range input resistance	0.1 mA: 1000 Ω; 1 mA: 100 Ω; 10 mA: 10.2 Ω; 100 mA: 1.2 Ω; 1000 mA: 0.3 Ω
Resistance	1 KΩ: ±0.5%, ±3 counts; 10 KΩ – 1 MΩ: ±0.5%, ±1 count; 10 MΩ: ±1%, ±1 count
	— Oscilloscope Section —
Voltage ranges	5 mV/Div to – 100 V/Div, ±3%
Bandwidth (Voltage)	DC – 1 MHz (at 10 mV/Div and below, 400 kHz)
Current ranges	5 µA/Div to 100 mA/Div, ±3%
Bandwidth (Current)	DC – 200 kHz (5 µA/Div – 10 μA/Div); DC – 400 kHz (20 μA/Div – 200 mA/Div)
Input resistance	10 MΩ // 150 pF (5 mV/Div – 1 V/Div), 100 pF (2 V/Div to – 100 V/Div)
Rise time	875 ns (5 mV/Div – 10 mV/Div); 350 ns (20 mV/Div – 100 V/Div)
Sweep	500 ms/Div – 2 µs/Div, ±5% (magnified or unmagnified)
Batteries	2 × “D” NiCd cells
Operating time	3.5 hours typical at maximum intensity after full charge cycle
Charge time	16 h
Mains power	90 – 136 V_AC. 48 – 62 Hz (Option 1: 180 – 250 V_DC. or 180 – 250 V_AC, 48 – 62 Hz)
Power consumption	Less than 8 watts

Links

Internals

The 213 makes use of two Tek-made custom chips, the 155-0048-01 trigger sweep circuit, and the 155-0114-00 7-segment character generator in the DVM circuit. In addition, it includes some standard opamps (741, 324) and a 4-digit decimal counter (Mostek MK5007).