Philips PM 5101 Manual page 18

18
- Cheek that the output voltage amounts
to
4 V
p _p.
- Set SK}
to
position ",,-".
- Cheek that the output voltage at 1
kels
eorresponds
to
the values
indieated at knob R2. Also eheek that the output voltages at
frequeneies 10
el s,
30
els
and 100
el s
(SK2 in position" X 2")
and 10
kel s,
30
kel s
and 100
kel s
(SK2 in position " X l00") do
not differ more than 1
%
from the values at 1 kels.
E. SQUARE W A VE VOLTAGE
- Set SK3
to
position"
'L ".
- Adjust the frequeney
to
2
kels
and eheek that the mark/ spaee
ratio amounts
to
1 : 1 (see Fig.
4). If required, adjust with R20.
- Cheek that the output voltage amounts
to
4 V
p _ p
-+-
5
%,
when
R2 is at 2 V.
- Cheek that the sag is less than 10 mV at 50
els
and 4 V
p
_
p
output
voltage.
r
X
+
Y
----1
z
x: y
=
markjspace ratio
z
=
sag
PEM 1515
E 1320
Fig.
4.
Block voltage shape