IEC 30 Series - Page 33

SECTION 4
Table 4-2. Calibration and Performance Checks (Continued)
,;--...
,-.
Step
5.2
(Cont)
Calibration
Control Setting
Test
Equipment
(Mode)
2.
Procedure
Rotate the OFFSET pot
to the CCW stop. DVM
shall read -10 ±. 5 vdc.
*
6.0
7.0
*
7.1
OUTPUT
ATTENUATOR
(F31)
OUTPUT
ATTENUATOR
(F32-34)
-10 db
FREQ Mult @ 1K
Dial
@ 3
WA VEFORM @ Sine
LEVEL @ CW stop and
PULL
FREQ Mult @ 1K
Dial @ 3
WAVEFORM
@ Sine
AMPLITUDE @ 3v p-p
LEVEL @ CW stop
DVM-AC
DVM-AC
Measure O. 707 ±. 015 vac
@ output BNC unterminated.
Measure 2. 236 ±. 045 vac
@ output BNC unterminated.
*
7.2
*
7.3
*
7.4
8.0
-20 db
-30 db
-40 db
VARIABLE
PULSE
(F32-F34)
AMPLITUDE @ 1v p-p
AMPLITUDE @ • 3v p-p
AMPLITUDE @ • 1v p-p
Measure 0.707 ±. 014 vac.
Measure 0.224 ±. 009 vac.
Measure O. 071 ±.003 vac.
*
8. 1
Range
FREQ Mult @ 1K
Dial @ 3.0
WAVEFORM
to
Variable Pulse
VARIABLE PULSE
Vernier @ Midrange
LEVEL @ CW stop
Scope-DC
1.
2.
Measure 10.0 ±l. Ov
p-p at OUT BNC
with 50-ohm ter-
mination.
Slowly
rotate the V. P.
vernier from stop to
stop. Observe that a
full range of pulse
widths are produced
from -10 vdc @ the CW
stop to +10 vdc @ the
CCW stop.
4-7