Tektronix T202 User Manual

NOTE
When operating the instrument from the
battery pack , always set the battery pack
power switch to on (button in) before
turning on the T202. Failure to do so
may result in keyboard lockup and a loss
of stored data. The keyboard lockup will
not damage the instrument or the bat-
tery pack . A lockup condition is cor-
rected by turning all the power switches
to off and using the turn-on seque nce .
Stored data that is lost cannot be recov-
ered.
Turning the Instrument On
1. Set both instrument Input Coupling (OFF , DC ,
GND, and AC) switches to OFF positions and
the battery-pack-power switch to off (button
out).
2. Plug the de-power cord from the battery pack
into the instrument de-power receptacle.
3. Set the battery-pack - power switch to on
( button in) .
4. Slide one or both instrument Input Coupling
switches to a coupling position (DC , GND , or
AC position).
Turning the Instrument Off
When turning the instrument off , set both Input
Coupling switches to OFF position before turning
the battery pack off . If the battery pack is mistak-
enly turned off first, reset all the power switches
to off and use the turn on sequence given in
" Turning the Instrument On • before attempting to
turn the instrument on again.
Battery Operation
In battery operating mode , the Power indicator
displays a steady light when there is sufficient bat-
tery voltage to operate the instrument. A blinking
1-8
s JI
•
JI
■
a
■
:II
■
:II
■
JI
■
Ii
■
Ii
■
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Power indicator shows that the output voltage of
the batteries has dropped below 4. 75 volts. At the
time the Power indicator starts to blink, there is
sufficient battery capacity remaining to operate
the instrument for about 30 minutes with both
channels being displayed at temperatures between
20°c to 30°c (68°F to 86 °F) .
Operating Time
How long the instrument may be operated from
the battery pack depends on the battery condition
and the instrument's operating mode . There is as
much as two-to-one difference in power require-
ment depending on operating mode. The longest
battery pack operating time is obtained when only
one channel is displayed in normal mode. With
both channels displayed , the power consumption is
increased by about 35% . Worst case occurs when
both channels are displayed and the vertical inputs
are overdriven (several volts being applied to the
input with the Volts per Division switches set at
0. 01 V).
Battery life is prolonged by turning the instrument
off when not in use.
Rechargeable Batteries
WARNING
I
The
battery charger is for use with
nickel-cadmium batteries only. Other
types may explode or release hazard-
ous materials if recharged.
Before recharging the nickel- cadmium batteries ,
the high/low charge switch needs to be set to
match the ampere-hour rating of the batteries .
- General Information
1-9

Tektronix T202 Specifications

General

Brand	Tektronix
Model	T202
Category	Test Equipment
Language	English