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HEWLETT
j1
PACKARD
MODEL 1331A/OPTION H72
X-Y DISPLAY
Model
l331A/Option H72 is a standard HP Model 1331A X-Y Display modified to
conform to Picker-Nuclear Specification A010811 and Specification A011058.
SPECIFICATION CHANGE.
Vertical and Horizontal Amplifiers
Deflection Factor:
Vertical:
2.64 V for 8 division deflection.
Horizontal:
3.3 V for 10 division deflection.
Z-Axis Amplifier
Offset: -1 V;
Z-axis
INPUT open (or at 0 V)
gives
beam at low inten-
sity or blanked
with
INTENSITY full cw.
Full ccw
rotation
of
INTENSITY turns beam off.
With +l
Vat Z INPUT, INTENSITY con-
trol
varies
beam from cut-off to full intensity. A -1 V signal
at
Z INPUT turns off beam current regardless of INTENSITY control
setting
.
Deflection Blanking:
>10 divisions of deflection from undeflected
position; circuit recovery time
<2
µsec to within one spot di-
ameter.
Cathode-Ray Tube
Storage Parameters:
Remote Erase:
Initiated by applying logic level 1 (high TTL level)
to erase Tine.
Remote
Minimum
Persistence:
Initiated by grounding remote per-
sistence line
in
WRITE mode.·
MODIFICATIONS.
X-Axis and Y-Axis Deflection Factor Change:
Refer to Section III in the
standard instrument manual.
Paragraph 3-26, figure
3-4,
and Table
3-1 explain the method whereby input attenuation is changed to pro-
vide desired deflection factors.
Because Table 3-1 does not specify
the changes required, Table 1 in this manual supplement lists the
components used on assembly Al to achieve a 0.33 V/div deflection
factor .
' ; '
Page l of 8
~----~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~---'
HEWLETT-PACKARD COMPANY
1900
GARDEN OF THE GODS ROAD
,
COLORADO
SPRINGS
,
COLORADO
,
U
.
S. A
.
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