Tektronix 323, Инструкция по эксплуатации

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TYPE 323
Page 1 of 2
TEXT CORRECTION
Section 4
Maintenance
Page 4-4
ADD: the following information at the end of page 4-4:
Battery Troubleshooting. Before troubleshooting the battery, determine
that the problem is actually in the battery. The Master Troubleshooting Chart
(Fig. 4-3) may indicate that the battery or charger is at fault; unusually short
internal battery operating time (between a 16 hour full charge and the time that
the LOW BATT lamp starts flashing) may indicate that either the battery or
charger or the LOW BATT lamp circuit is at fault or that an excessive circuit-
drain exists in the Oscilloscope.
Circuit drain can be checked as follows:
(1) Apply external DC power (between 6 and 16 V) to the EXT DC connectors,
inserting a 0 to 0.5 A ammeter in series with one of the power leads.
(2) Set the Oscilloscope controls as follows:
(3) Multiply the applied DC voltage by the current indicated on the ammeter.
The product should be approximately 1.6 W. A product of 2 W or more is an
indication of excessive circuit-drain, and should be checked further by performing
a Calibration Procedure or by otherwise troubleshooting the Oscilloscope. If
the product is between 1.25 and 2 W, circuit-drain can be considered as normal
and the trouble can be assumed to be in the battery or charger.
TIME/DIV
POSITION controls
VOLTS/DIV
TRIGGER
Trig/Horiz Coupling
Power Pack Switch
POWER
INTENSITY
Adjusted fior minimum
brightness necessary
for good viewing
1 ms
in and centered
5 DIV CAL
+ AUTO
INT TRIG - AC
EXT DC
ON
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