Specifications—T912
Table
1-1 (cont)
Characteristic
Performance Requirement
B. VERTICAL
AMPLIFIER (cont)
Chopped
Mode
Repetition Rate
Approximately 250 kHz.
Input Resistance
Approximately
1
MQ.
Input
Capacitance
Approximately
30
pF.
Maximum
Input
Voltage
DC
Coupled
400 V (dc
+
peak
ac).
800
V
(p-p
ac) at 1 kHz or less.
AC
Coupled 400 V (dc
+
peak ac).
800
V
(p-p
ac) at 1 kHz or less.
C
TIME
BASE
Sweep Rate
Calibrated Range 0.5
s/div to 0,5/us/div; 19
steps in a
1
-2-5
sequence. Variable X1 to XI
0
magnifier extends maximum
sweep
rate
to 50
ns/div.
Accuracy Accuracy
specification
applies
over
center 8 divisions.
Exclude
first
50
ns
of
sweep for both
magnified and unmagnified sweep
rates and anything beyond the
100th magnified division.
+20°
C to
+30°
C
Unmagnified Within 3%,
Magnified Within 5%.
0°
C to
+45°
C
Unmagnified Within 4%.
Magnified
Within 6%.
Variable
Magnifier
10:1.
X-Y Operation
Deflection Factor
Variable
Magnifier
X10 Approximately
100 mV/div.
XI Approximately 1 V/div.
X"Axis
Bandwidth
i
Dc
to
at least
1 MHz with
10
div
reference signal.
Table
1-1
(cont)
Characteristic Performance Requirement
C.
TIME BASE (cont)
Input Resistance
Approximately 1 MO.
Input Capacitance Approximately
30
pF.
Phase Difference
Between X- and
Y-Axis Amplifiers
5°
Or less
from
dc
to
50
kHz.
Triggering
Sensitivity 0.5 div internal or 100 mV external
from 2
Hz
to
1
MHz, increasing to
1.5 div
internal
or 150 mV
external
at
10
MHz.
External Trigger
Input
Maximum Input
Voltage
400 V (dc
+
peak ac).
800
V
(p-p
ac)
(1
kHz or less).
input Resistance
Approximately
1
MfJ.
Input
Capacitance Approximately
30
pF.
Level
Range
EXT +0.5
V
to
-0.5
V.
EXT
10
+5 V to
-5
V.
Table
1-2
ENVIRONMENTAL
Characteristic
Performance
Requirement
Temperature
Storage
-55°
C to
+75°
C.
Operating
0°C to
+45°
C.
Altitude
Storage
To 50.000 feet.
Operating
To
15,000 feet. Maximum oper-
ating temperature
decreases
1°C/
1,000 feet above
5,000
feet.
12
REV.
A
APR 1977
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