Tektronix P6042 PROBE, Instruction Manual

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Operating Instructions —Type P6042
through the holes in the cabinet. The clearance provided by
the feet on the bottom of the instrument should be main­
tained. Provide at least three inches of clearance at the sides
and top (more if possible). The instrument can be operated
where the ambient air temperature is between 0°C and
+50°C.
Controls and Connectors
Fig. 2-2 shows the front-panel controls and connectors on
the P6042 and describes the function of each.
Installation
When shipped
from the factory, the P6042 is ready to be
used with either a 50-ohm system or a high-impedance
oscilloscope and has been factory calibrated to meet the
specifications listed in Section 1. Due to normal differences
in oscilloscope input characteristics, however, the high-fre­
quency response of the probe should be checked on the
system with which it is to be used before making critical
high-frequency current measurements.
If the instrument is to be operated with a high-impedance
oscilloscope connect the 50-ohm termination (011-0049-00),
supplied in the accessory kit, to the input connector of the
oscilloscope.
1. Connect the P6042 OUTPUT to the input of the oscillo­
scope (or termination), using a 50-ohm coaxial cable.
2. Turn the oscilloscope and P6042 power on and allow five
minutes warm-up time (at 25°C).
3. Set the oscilloscope controls as follows:
Volts/div 50 mV
Variable (Volts/div) Calibrated
Input Coupling Ground
4. Set the P6042 controls as follows:
OUTPUT DC LEVEL Midrange
CURRENT/DIV BALANCE Midrange
CURRENT/DIV 1 A
5. Center the trace vertically on the CRT, then switch input
coupling to DC.
6. Push the thumb-controlled portion of the probe into the
locked position. When the slider is in the locked position the
shield
around the transformer core is grounded, the PROBE
UNLOCKED light is extinguished, and the amplifier is ready
for operation.
7. Place the probe in the front-panel receptacle. Momen­
tarily depress the DEGAUSS lever and release. (Time required
for probe degaussing is
200 milliseconds.)
NOTE
To remove any magnetic flux present in the probe
transformer core, always degauss the probe after
Fig. 2-3. P6042 Currant Probe connected to Type 106 Square-Wave Generator output.
2-3