Specifications - RCA 54-45 Manual

SEC TION I. FEATURES AND SPECIFICATIONS
The RCA Institutes Model 54-45 is a high quality, general purpose 3-inch CRT Oscilloscope
with the performance capabilities required in general laboratory and service work.
1- 1. FEATURES
1. Compact, lightweight design. Fits on any bench, goes anywhere.
2. Flat-face CRT gives full utilization of face area.
3. Intensity and focus controls plus astigmatism adjustment.
4. 4-range sweep generator covers 10 cycles to 100, 000 cycles.
5 .
1500 volt high- voltage supply for sharp, bright trace. No blooming.
6. Full retrace blanking and fully automatic sync .
7. Removable green filter easily snaps into the front of the plastic bezel.
8. Permits external use of the power supply, with 400 VDC at 20ma and 6. 3 VAC at 300ma,
!
ava lable at rear pin jacks .

1-2. SPECIFICATIONS

VERTICAL AMPLIFIER: Flat ±3db from 2 cycles to 500kc ; - 6db at 1mc ; 25-mv per em sensitivity;
frequency-compensated 100: 1 coarse attenuator; input impedance 1 megohm shunted by 30pf;
cathode follower input with fine attenuator in output; positioning range permits centering any part
of trace expanded to three times CRT diameter.
HORIZONTAL AMPLIFIER: Flat ±3db from 2 cycles to 350kc ; 1. 3V per em sensitivity; input imped­
anc � 1 megohm.
SWEEP CIRCUIT: 10 cycles to lOOkc in four overlapping ranges ; external or internal sync ; fully auto­
matic sync on all ranges ; full retrace blanking; SWEEP RANGE switch also selects internal 60-
cycle sine-wave sweep and input to HORIZ. INPUT terminals .
CRT CIRCUIT: Flat face 3-inch CRT: 1500 volts accelerating potential; intensity and focus controls
on front panel; astigmatism adjustment without cabinet removal.
TUBES: 2 - 1 2AU7, 1- 6BL8, 1 - 6D10, 1- 6X4, 1- 1 V2, 1-CRT
POWER REQUIREMENTS : 105 - 125 volts, 60 cycles , 60 watts
SIZE (HWD) : 8- 1/2 x 5 - 3/4 x 11- 1/4 inches
WEIGHT: 11 lbs .
1-3. FUNC TIONS O F CONTROLS AND TERMINALS
The oscilloscope controls and terminals are easy to use once their functions are understood.
If the controls are divided into specific groups , for purposes of explanation, it will be easier.
understand and keep in mind just what these functions are.
The INTENSITY & FOCUS controls together control the appearance of the trace. The INTENSITY
knob controls the brightness of the trace and the FOCUS knob controls the sharpness or definition of
the trace on the scope screen. The astigmatism control, a potentiometer accessible to screwdriver
adjustment through a hole in the right-hand side of the cabinet, affects spot shape and is used to obtain
a trace of uniform thickness . Proper adjustment of these controls should give a trace formed into a
thin bright line . The INTENSITY & FOCUS controls interact to an extent; that is , adjustment of the
FOCUS knob is usually necessary when the setting of the INTENSITY knob is changed.
OPERATING INSTRUCTIONS
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