Type 511-A Cathode Ray Oscilloscope
is a wide
range, portable instrument, making possible the observation
of a wide variety of electrical waveshapes. It is primarily
intended for laboratory and shop use, in the development and
testing of all types of electronic equipment.
The Type 511-AD Oscilloscope
is identical to the Type 511-A
except that it includes a factory installed Type 1-AD-25
Delay Network, which is described in Section VII of this manual.
1. Sine waves from 10 cycles to 10 me.
2. Pulses of. 1 microsecond to 1 /50 sec.
Sweep Circuit Hard tube type, either triggered or recurrent
Sweep Speeds Continuously variable from .01 sec. per cm to
.1 microsecond per cm.
.5 to 50 V (Peak) sine wave or pulse of either polarity.
Pulse as short as .05 microsecond will trigger
satisfactorily. A key connected between TRIGGER INPUT and
GND. is suitable for triggering single sweeps.
CRT is unblanked and sweep is operating linearly in less
than .1 microsecond after receipt of an infinitely Sharp
Sweep Magnification Any desired 20% of the sweep can be
spread over the entire trace except for sweep speeds faster
than .5 microsecond per cm.
External Sweep Input
DC coupled via 100 K potentiometer and sweep Amplifier
Maximum deflection sensitivity 1.5 V per cm DC or peak to
peak AC. Band width, DC to 800 kc (3 db down at 800 kc).
Vertical Deflection Circuit Switch permits signal input
connector on panel to be connected to deflection plates
directly, via capacitor (RC=.l sec), via 1 Amplifier
or via 2 Amplifier
Frequency compensated RC type with attenuation ratios of 2,
4, and 8.
Vertical Deflection Sensitivity Without Amplifier
27 V per
cm maximum, 200 V per cm minimum, DC or peak to peak AC.
1 Stage, 2.7 V per cm maximum, 40 V per cm minimum.
2 Stages, .27 V per cm maximum, 4 V per cm minimum.
(Sensitivity is reduced by a factor of 10 when Probe
In no case should the combined AC and DC input voltages
exceed 600 V peak.
1 meg shunted by 40 mmfd (±5%) for any setting of the input
selector and input attenuator.
, 10 megohms shunted by 14 mmfd.
1 stage, down 3 db (Max) (from 1 me response) at 5 cps and
2 stages, down 3 db (Max) (from 1 me response) at 5 cps and
Rise time, 1 stage .04 miarosecond (10% to 90%)
2 stages .05 microsecond (10% to 90%)
Sine wave of power line frequency. Three ranges 0-1, 0-10,
0-100 v. peak to peak. Accuracy for line voltage of 117 v.
is ±5% of full scale. May be measured with external meter
when greater accuracy is required. A position on the SIGNAL
CALIBRATE switch allows the use of an external calibrating
source when desired.
Waveforms available externally.
Sweep sawtooth, 20 volts peak.
Positive and negative gate, 40 V. peak, same duration as sweep.
Connection to CRT Cathode
via .1 mfd capacitor. RC=.012 sec.
Accelerating voltage on cathode ray tube, 3 KV.
Power Requirements. 105-125 volts, or 210-250 volts, 50-60
cycles, 230 watts. (See Section IV.)
Weight. 50 pounds.
Dimensions. 15Vi" high, 12Vz" wide, 21V2" deep.
Finish. Panel, photo etched aluminum with black letters.
Cabinet, gray wrinkle.