Heathkit IG-4505 - Page 32

Page 32
HBEATHEKIT®
TESTS AND CALIBRATION
In this section of the Manual you will test and calibrate your
Oscilloscope Calibrator. If at any time you do not obtain the
results indicated, refer to the ‘‘In Case of Difficulty” section
on Page 39. Locate and repair any problems before you
continue with the calibration.
( ) Carefully inspect all connections for loose wires or
unsoldered connections. Remove any clippings or
solder splashes.
TESTS
( ) Set the calibrator front panel switches as follows:
POWER (SW101) — OFF |
VOLTS OUT (SW2) —1V
TIME OUT (SW1) — 1mS
MULTIPLIER (SW102) — X1
( ) Set the CAL control R14 (located on the circuit
board) to the center of rotation.
WARNING: When the line cord is connected to an AC
outlet, AC voltage is present at several places. These areas
are shown in the boxed-in area on Figure 1-1 in the
IHustration Booklet. Be careful — you may receive a severe
electrical shock if you touch this voltage.
{ ) Connect the calibrator tine cord plug to an AC outlet.
( ) Set your oscilloscope controls as follows:
INPUT ATTENUATOR — .5V/cm
TIME BASE — 1mS/cm
( } Connect the BNC connector to the input of your
oscilloscope.
( ) Stide the POWER switch to the ON position.
( ) Adjust the trigger and stability control on your
oscilloscope to obtain a waveform similar to the
waveform in Figure 1-2.
( ) Turn the TIME OUT and MULTIPLIER switches
through each of their positions. You should obtain a
waveform for each switch position. Readjust your
oscilloscope time base controls as necessary.
LOO BLL RELL
VERTICAL PORTION
OF TRACE WILL BE DIM.
1 CYCLE/cm
Figure 1-2