Tektronix 502A User Manual

Shipping Blocks
It is very important to remove the shipping blocks from
the vertical amplifier prior to using the oscilloscope. The
shipping blocks are narrow inserts, which are used to hold
the vertical amplifiers firmly in place during shipment. A
small tug with a pair of plier towards the outside of the
instrument will remove each of the two shipping blocks used
on each vertical amplifier. See figure 2-1 for the shipping
block positions.
The shipping blocks should be kept for future use.
Cooling
A fan maintains safe operating temperature in the Type
502A Oscilloscope by circulating air through a filter and
over the components. Therefore, the instrument must be
placed so that the air intake is not blocked. The air filter
must be kept clean to permit adequate air circulation. If
the interior temperature should rise too high for some reason,
SECTION 2
OPERATING
INSTRUCTIONS
a thermal cutout switch will disconnect the power and keep
it disconnected until the temperature drops to a sofe value.
For proper air circulation, the bottom and side panels
must be in ploce. Be sure the bottom panel is installed ac 
cording to directions.
Power Requirements
The regulated power supplies in the Type 502A will
operate with line voltages from 105 to 125 volts, at 117
nominal line volts, or from 210 to 250 volts at 234 nominal
line volts. Proportionate line voltage variations apply
when other nominal line voltage primary connections are
made. For maximum dependability and long life the voltage
should be near the center of this range. Fig. 2-2 shows
the connections for the various line voltages.
Voltages outside of these limits, or poor line-voltage
waveforms, may cause hum or jitter on the trace and may
cause unstable operation. Be sure to check for proper line
voltage if indications such as these are present.
Fig. 2-1. The position of the shipping blocks for each vertical amplifier.
2-1

Tektronix 502A Specifications

General

Brand	Tektronix
Model	502A
Category	Test Equipment
Language	English