Display; Channels A And B - Philips PM3055 Service Manual

2-3
CHARACTERISTICS
SPECIFICATION
ADDITIONAL INFORMATION
2.1
DISPLAY
*
CRT
Type No
Measuring area
(h
X
w)
PHILIPS D
14-372
80 X 100
mm
8
x
10
div.
1
div.
=
10
mm
1
subdiv.
(sd) =
2
mm
*
Screen type
Standard
Option
*
Total accelera-
tion voltage
*
Graticule
Engravings
Division lines
Subdivisions
Dotted lines
Percentages
* Orthogonality
*
Illumination
GH
(P
31)
GM
(P 7)
16
kV
Internal fixed
1
cm
2
mm
1
,
5
and 6,5 cm
from top
0%, 10%, 90%, 100%
Long persistence
90°
+/-
1°
Continuously
var
iab le
Horizontal
as
well
as
vertical
Idem.
Only horizontal.
Measured
in zero point.
* Display
time < 2
us
per channel in
chopped mode
* LCD liquid crys-
tal
display
Type No
LC 9438130
Visible area 25,4
x 88,8
mm
Back lighting
Permanently on
All relevant settings are
visible
in
display.
2.2
VERTICAL DEFLECTION OR
Y AXIS
2.2.1
Channels A and B
* Deflection
coef
f
.
2
mV/div...l0 V/div
In
1
,
2
,
5
sequence.
If
PM 8936/09
is
used, deflec-
tion coeff.
is
automatically
calculated in
display.
* Variable gain
1
:
>2,5
control range
*
Error limit <
+/-
3%
Only in
calibrated position.
* Input impedance
Paralleled by
1
M
ohm +/-2%
20 pF
+/-2pF
Measured
at f^ <
1
MHz
Measured
at f^
<
1
MHz