Operating Instructions; Safety Information; Controls, Connectors, And Indicators; Side Panel - Tektronix 213 DMM Instruction Manual

Section 2-213 Service
OPERATING INSTRUCTIONS
SAFETY INFORMATION
This instrument is designed to allow the input common re-
ference to float above ground. Under this condition, the
probe common clip, COMMON input jack, mA-n input jack,
EXT TR I G jack, and the power plug prongs may be at a
dangerous potential. See Table 1-4, Common Isolation
Protection in the Specifications section.
When operated on batteries, the power line plug should be
stored in the rear-panel insulated compartment. Potentials
applied to the common connectors (probe common clip or
COMMON jack) may cause small amounts of current to
flow in the power-line circuitry creating a possible shock
hazard on the plug prongs.
The probe common clip and COMMON jack are electrically
connected to each other; therefore, any potential applied
to one is present on the other creating a possible shock ha-
zard. Also, to prevent dissimilar voltages being applied to
the probe common clip and COMMON jack, which could
cause equipment damage, only one should be connected to
the circuit under test at any given time. The probe with its
common clip, and the mA-n input jack with its COMMON
jack, should not be connected simultaneously to a circuit
under test.
Personal and equipment safety precautions are used through-
out this manual and are identified as follows:
213 DMM
OSCILLOSCOPE
Personal Safety
WARNING
I
Equipment Safety
CONTROLS, CONNECTORS, AND INDICATORS
Side Panel
CD
0
CD
©
mA-n-Banana-jack input for current and resistance
measurements. In then mode, this jack is negative
with respect to the COMMON jack.
EXT TRIG-Banana-jack, high-impedance input for
external trigger voltage.
DC
BAL-Screwdriver adjustment to adjust for mini-
mum trace shift, or change in DMM zero reading,
when switching vertical deflection factors or DMM
range.
COMMON-Banana-jack common return path for cur-
rent and resistance measurements, or as an alternate
reference point or common return when using the
voltage probe. It is e lectrically connected to the
probe common clip.
1481-35
Fig. 2-1. Side panel.
@
2-1