Specifications - Tektronix 213 DMM Instruction Manual

Section 1-213 Service
SPECIFICATIONS
The 213 DMM Oscilloscope is a portable measurement instrument that is designed to be used as either a digital multimeter or
an oscilloscope. Function selection is made with a front-panel pushbutton switch. Voltage measurements are made with the
integral high-impedance probe, while current and resistance measurements are made through a low-impedance banana jack in-
put on the side panel. Operating power is provided by internal rechargeable batteries or from power-line voltage. An integral
battery charger recharges the batteries whenever the instrument is connected to the power lin~.
The digital multimeter measures ac or de voltage and current, and resistance. It features true rms responding circuitry when
making ac voltage or current measurements. Full scale measurement ranges are 0.1 to 1000 V, 0.1 to 1000 mA, and 1 kn to
10 Mn with a 200% full scale overrange on all ranges except 1000 V. The crt readout is a 3½-digit display containing an auto-
matic polarity indicator, and a decimal point which is positioned by the range selector switch. Overrange is indicated by an
unblanked readout display consisting of scrambled character segments.
The oscilloscope function provides a single channel, de to 1 MHz vertical deflection system with calibrated deflection factors
of 5 mV to 100 V /division with a reduced bandwidth of de to 400 kHz on the 5 mV and 10 mV ranges. Current deflection
factors are 5
µA
to 100 mA/division from de to 400 kHz with a reduced bandwidth of de to 200 kHz on the 5
µA
and 10
µAl
division ranges. The horizontal deflection system provides calibrated sweep rates from 0.5 s to 2 µs/division, with a variable
sweep magnifier that provides uncalibrated sweep rates to at least 5 times faster than the selected rate. The trigger input is
either internal or external and provides stable triggering over the full bandwidth of the vertical defl~ction system. The oscillo-
scope crt display is a 6 x 10 division graticule with each division approximately 0.2 inches (0.5 cm).
The following instrument specifications apply over an ambient temperature range of -15° C to +55° C unless otherwise speci-
fied. Warm up time for specified accuracies is 10 minutes. If the instrument is already stabilized at the ambient temperature,
warm up time is 10 seconds.
TABLE 1-1
Digital Multimeter Electrical Specifications
Characteristic Performance Requirement
DC AND RMS VOLTS
Range 0. 1 V to 1000 V
Resolution 100 µVat 0.1 V full scale (reading must be at least 10% of
full scale)
Input Resistance 10 Mn within 1%
Input Capacitance
0.1 V to 10 V Approximately 150 pF
100 V to 1000 V
Approximately 100 pF
Input Leakage Current
200 pA max at 30°C or less with 2 mV or less change from
open to shorted probe
@ 1-1