IEC 30 Series - Page 31

SECTION 4
Table 4-2. Calibration and Performance Checks (Continued)
,-.
.-.
Step
Calibration Control Setting
Test
Equipment
(Mode) Procedure
1.
DVM
to OUTPUT BNC
via unterminated coax
with scope as monitor.
2.
Adjust R119 for 0 ±5mv
dc
on the DVM.
Ad~ust R166 for reading of
5.
56 ±. 010v (20.0 ±O. 036v
p-p).
4.0
4.1
*
WAVEFORMS
Output
Amplifier
Zero Adjust
FREQ Mult @ 1K
Dial @ 2.5
WAVEFORM@DC
LEVEL @ CW (Max)
DVM-DC
SCOPE-DC
*
4.2
Gain Adjust
WAVEFORM@
Triangle
DVM-AC
4.3
*
*
Output Amplifier
Squarewave
Response
FREQ Mult @ 1M
Dial @ 3.0
WAVEFORM @ Sq.
1.
Adjust the level for 10v
p-p on the scope.
2. Adjust C58 for ideal
square waveform. Over-
shoot or aberration
must be less than 5%
p-p.
3.
Measure rise and fall
between 10% and 90%
of amplitude (tr and t
f
<60
ns).
*
4.4
Square
Amplitude
Symmetry
WAVEFORM @ Sq
FREQ Mult @ 1K
LEVEL @ mid range
DVM-DC
1.
DVM
to OUT BNC via
unterminated coax.
2.. Adjust R63 for 0 ±5 mv dc
*
4.5
Square
Amplitude
LEVEL @ CW (max)
DVM-AC
Measure 11. 11 ±O. 24 vac
Adjust R96 for 0.0 ±5 mv
dc.
1.
Connect the distortion
analyzer to the output
BNC
via 50-ohm termi-
nated coax with scope
as monitor.
2. Adjust R77 and R89
alternately for mini-
mum distortion .
4.6 Sine Zero
WAVEFORM @ Sine
DVM-DC
4.7
Sine
Distortion
FREQ Mult @ 1K
Dial @ 1. 0
Distortion
Analyzer
Scope
4-5