Characteristic!
■Type 544/RM 544
Frequency Dc to 400 kc (3-dB down at maximum
Response sensitivity).
Input (approximately) 1 megohm paralleled by
Characteristics 55 pf.
Cathode-Ray Tube
Type T5470-31 -2.
Unblanking Dc coupled.
Amplitude Calibrator
Accelerating lOkv.
Potential
Output Voltages 0.2 mvolts to 100 volts peak-to-peak in 18
steps. In addition, a 100-volt dc output is
available.
Frequency Approximately 1-kc square wave.
Output Current 5 ma squarewave available at the front-
panel current loop.
Output 50 Cl in .2 to 200 mVOLTS positions. Pro-
Impedance gressively higher output impedances in the
.5 to 100 VOLTS positions.
Amplitude Peak-to-peak amplitude accuracy is ±3%
Accuracy of indicated value when working into an
impedance of 1 megohm or higher in the
.5 to 100 VOLTS position. When working
into a 50-ohm load, in the .2 to 200
mVOLTS positions, output amplitude is one-
half of the indicated voltage. (Nominal ac
curacy in this case, is ±3% assuming the
external load impedance is an accurate 50
ohms.) The 5 ma current accuracy is ±3% .
Front-Panel Output Signals
+ GATE OUT At least a 20-volt peak-to-peak square-
wave pulse having the same duration as
the sweep. Minimum dc load resistance
is 5 k.
SWEEP OUT Approximately a 100-volt, peak-to-peak
sawtooth voltage having the same dura
tion as the sweep. Minimum load im
pedance is 100 k.
VERT SIG OUT Vertical signal output connector. Output
amplitude is approximately 0.4 volt per
centimeter of deflection on the crt. Rise
time is 20 nsec or faster. Output is ac
coupled.
External Single- Requires a positive-going step or pulse of
Sweep Input- at least +20 volts with a risetime of 0.5
Signal ^.sec or faster.
Requirements
Useable Viewing 6-cm high by 10-cm wide.
Area
Focus
Construction
Graticule
Vertical: 2 horizontal lines/mm distinguish
able over the center 4 cm. 1.5 horizontal
lines/mm distinguishable in the top and
bottom 1 cm.
Horizontal: 2 time markers/mm distin
guishable over the middle 8 cm. 1.5 time
markers/mm distinguishable in the first
and tenth cm.
All glass 5-inch, flat-faced crt.
Internal, adjustable edge lighting. 6X10
cm with vertical and horizontal 1-cm divi
sions with 2-mm markings on the center-
lines.
Power Supplies
Line Voltage
Line Frequency
Power
Consumption
Protection
±10% of nominal line voltage. (See Op
erating Instructions)
50-60 and 400 cps*.
400 watts typical.
Primary of power transformer is fused and
a thermal relay is installed that interrupts
power in the event of overheating.
Mechanical
Construction Three piece, blue-vinyl covered textured
aluminum. Front panel is photo-etched and
anodized. Chassis is aluminum alloy.
Net Weight 80 pounds 7 ounces
♦With line frequencies ether than 50-60 cycles, a special fan m odifi
cation is required; contact your local Tektronix Fiold Representative.
1-2
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