Tektronix 3 - Page 4

Characteristics—No. 3 Electric Shutter
TABLE 1-4 (cont)
Characteristic
Performance Requirement
Shock:
Operating?
15 g's, Y_ sine, 11 ms duration, 1
shock in vertical plane only. Guil-
lotine-type shocks.
Non-operating®
60 g's, Y2 sine, 11 ms duration,
1 shock in each of 6 face plates.
Guillotine-type shocks.
Humidity*
5 cycles (120 hours) of MIL-STD-
202C, method 106B. Omit freezing
and vibration. Allow 24 hour post-
test drying period at 25°C, +—5°C
with a relative humidity of 20%
to 80%.
Supplemental Information
The following information applies to the following listed
electric shutters and lens assemblies:
TABLE 1-5
Electric Shutter and Lens Assemblies
Description
Fits Tektronix | Tektronix Max. Object to
Camera Part No. Aperture | Image Ratio
C-12, C-13, 122-0772-00 f/1.9 1:0.7
C-19, C-27, 122-0773-00 /1.9 1:0.5
C-40 122-0840-00 f/1.4 1:1
122-0769-00 £/1.3 1:0.5
122-0771 -00 /1.9 1:0.85
The electric shutter is operated by a_ single solenoid
against the spring tension of the shutter release mechan-
ism. Power is required to open the shutter; removal of
power allows the shutter to close. The solenoid is intended
for operation from DC voltage only.
“Electric Shutter and Speedcomputer separated and not mounted on
a camera.
‘Applies to Speedcomputer only.
To
obtain
quick
shutter
opening,
a
brief
pulse
of
up
fo
120V
may
be
applied.
As
soon
as
the
shutter
is
open,
the
ous
applied
voltage
may
be
dropped
quickly
to
24V
or
a)
to
avoid
overheating
of
the
solenoid
and
possible
damage
to
the
electric
shutter.
The
recommended
operating
waveform
is
an
opening
pulse
of
120V,
decaying
on
an
rc
time-constant
of
15ms
to
a
holding
voltage
of
20V.
A
circuit
for
deriving
such
a
wave-
form
is
shown
below.
TABLE 1-6
Electric Shutter
Characteristic Information
Solenoid Resistance 500 ohms, 10% at 25°C
Maximum Input Voltage
Peak Value 140 V DC for not more than 5 ms
Continuous 24V DC
Minimum Input Voltage
To Open Shutter 45V DC for a duration of 60 ms
To Hold Shutter Open | 18V DC
Opening Time Mechanical Delay from in-
shutter opening | put voltage ap-
time to 100% | plication to
light-transmis- fully open
sion point at
maximum aper-
ture
120V DC 5 ms 13 ms
100 V DC 6 ms 14 ms
80 V DC 6 ms 17 ms .
60V DC 10 ms 22 ms YU
45V DC 15 ms 50 ms
Closing Time To 0%
Light-Transmission Point
From Maximum Aper-
ture
30 V DC Holding é6ms
Voltage
18 V DC Holding éms
Voltage
nmr
H
HEE
HE
HE HE
HE
HH
EF
EF
BE
POWER
ON
[OPEN]
SHUTTER
110%
AC
oh
00
a
SOLENOID
—S—
Lo
os
;
=...
GORDIE
Tt
! 2wWw +
1 100 v RMS 30 uF ae
1
~
K50
LL
| NNE
1
1
SHUTTER |
[OPEN]
2500 2 5W [OPEN] SOLENOID
120
V
DC
ot
CONNECTOR
P10 i]
+1/-
| 4 2 B
30 uF K50 VU
LC
aa
NONE
i
1-2
®
i