B&K Precision 1477 15 MHz Triggered Sweep Dual-Trace Oscilloscope
Comes with a manual and what you see in the pictures. If you don't see it, you probably wont get it.
Specifications are from B&K Precision and may vary slightly due to upgrades, options, or revisions this unit may or may not have.
The unit is guaranteed to work.
Power Requirements: 110-120/220-240 V, 50-60 Hz, 50 W
The B & K Precision Model 1477 Triggered Sweep Dual-Trace Oscilloscope is a laboratory quality, professional instrument for observing and measuring waveforms in electronic circuits. Dual vertical inputs are provided for simultaneous viewing of two waveforms. Low-frequency, low repetition-rate waveforms are chopped at a 200kHz rate to provide for simultaneous viewing. Alternate sweep of the two inputs permits simultaneous viewing of high-speed, high repetition-rate waveforms. In addition, the sum or difference of the two input waveforms can be displayed as a single trace.
the dual-trace feature, together with the 15 MHz bandwidth, wide range of sweep speeds, and a high sensitivity provided, make this the ideal oscilloscope for a broad range of applications, including troubleshooting and repairing electronic equipment, research and development, and laboratory instruction.
Two input waveforms can be viewed either singly or simultaneously, as desired. Individual vertical sensitivity and positioning controls are provided for completely independent adjustment of the two signal amplitudes.
Only the cathode ray tube uses a filament. All other stages use transistors, diodes, FET's (field effect transistors) and IC's.
The 1477's stability of waveform presentations is beyond comparison with non-triggered sweep oscilloscopes. The sweeps remain at rest until triggered by the signal being observed, to assure that they are always synchronized. Fully adjustable trigger threshold allows the desired portion of the waveforms to be used for triggering. A single waveform, or both waveforms in dual-trace operation, can be synchronized to the signal displayed on Channel A or Channel B or to an external sync trigger.
The 130 mm (approx. 5.1 inches) diameter cathode ray tube gives easy-to-read presentation of an 8 x 10 cm rectangular viewing area.
Calibrated Voltage Scales Feature:
Accurate measurement of the instantaneous voltages on 11 different attenuator ranges for both Channel A and Channel B.
DC to 15 MHz bandwidth and 24 nSEC rise time assure distortion-free, high-resolution presentation at high frequencies.
Wide Range of Sweep Speeds Feature:
Sweep speed range of 0.5 µSEC/cm to 0.5 SEC/cm provides every speed necessary for viewing waveforms from DC to 15 MHz.
A five time magnification (5X) of the horizontal sweep allows close-up examination of a portion of the waveform. In addition, the 5X magnification provides a maximum sweep speed of 0.1 µSEC/cm.
Permits the low-capacitance, high impedance, 10:1 attenuation probes to be used for virtually all measurements, thus assuring less circuit loading.
A built-in sync separator circuit is included specifically for viewing television signals. When using VIDEO SYNC, television vertical sync pulses are automatically selected at sweep times of 0.5 SEC/cm to 0.1 mSEC/cm for viewing television frames. Horizontal sync pulses are automatically selected at sweep times of 50 µSEC/cm to 0.5 µSEC/cm for viewing television lines.
The unit may be used as a vectorscope to provide a color display exactly as specified by color television manufacturers.
A built-in calibrated 1 volt peak-to-peak square wave permits checking and recalibration of the vertical amplifiers without additional equipment.
Fully variable illumination for the scale. Vertical and horizontal markers on the scale make voltage and time measurements easy to read.
Intensity modulation capability included for time or frequency markers.
Carrying handle with comfortable molded fingergrip also doubles as tilt stand. Locking detend each 22.5° allows adjustment of viewing angle. Rear feet support oscilloscope in face-up position and double as cord wrap for storing power cord. Slotted bezel over face of CRT mounts standard oscilloscope camera for making waveform photographs.
Vertical Amplifiers (Ch. A and Ch. B) Specification:
Deflection Factor: 0.01 V/cm to 20 V/cm, +/- 5% in 11 ranges each providing for fine adjustment.
Input Resistance: 1 megohm (approx).
Input Capacity: 22 pF (+/- 3 pF).
Max. Input Voltage: 30 V (DC + AC peak) or 600 V p-p.
* A & B (dual trace); trace automatically chopped at all sweep times or 1 mS/cm and slower; alternate trace automatically selected for all faster sweep times.
* A + B (single-trace algebraic sum of Channels A and B).
* A - B (single-trace algebraic difference of Channels A and B).
Chop Frequency: 200 kHz (+/- 20%)
Channel Separation: Better than 60 dB.
Sweep Circuits (Common to Ch. A and Ch. B) Specifications:
Sweep System: Triggered and automatic. In automation mode, sweep is obtained without input signal.
Sweep Time: 0.5 µSEC/cm to 0.5 SEC/cm (+/- 5%) in 19 ranges, in 1-2-5 sequence. Each overlapping range provides for fine adjustment.
Sweep Range of Variable Control: At least 2.5 times.
Sweep Magnification: Obtained by enlarging the above sweep 5 times from center. Maximum sweep speed becomes 0.1 µSEC/cm.
Linearity: 3% or less distortion for 0.5 SEC/cm to 2 µSEC/cm ranges. 5% or less for 1 µSEC/cm and 0.5 µSEC/cm ranges.
Length of Sweep: 102 mm to 110 mm.
Source: Ch. A, Ch. B, and Ext: 1 V p-p sensitivity.
Slope: Positive and negative, continously variable level contorl; pull for Auto.
Triggering Range: 20 Hz to 15 MHz (min. 0.5 cm deflection as measured on cathode ray tube).
Video Sync: Vertical and horizontal sync separator circuit provided so that any portion of composite video waveform can be synchronized and expanded for viewing. Line (Horiz.) and Frame (Vert.) sync switched automatically by Sweep Time/cm switch.
Frame: = 0.5 SEC/cm to 0.1 mSEC/cm (vertical sync pulses).
Line: = 50 µSEC/cm to 0.5 µSEC/cm (horizontal sync pulses).
Horizontal Amplifier (Horizontal input thru Ch. B input) Specifications:
Deflection Factor: 10 mV/cm (nominal).
Frequency Response: DC to 1 MHz (-3 dB).
Input Resistance: 1 megohm (nominal).
Input Capacity: 22 pF (+/- 3 pF).
Input Protection: 300 V (DC + AC peak) or 600 V p-p.
X-Y Operation: With Sweep Time/cm switch in Ch. B position, the Ch. A input becomes the Y input (vertical) and the Ch. B input becomes the X input (horizontal). The Ch. B position control becomes horizontal position control.
Calibration Voltage Specifications:
Calibration Voltage: 1 kHz square wave of 1 V p-p.
Intensity Modulation Specifications:
Input Resistance: 470 kOhms (nominal), +/- 20%
Power Requirements Specifications:
Input: 120 VAC, 50/60 Hz, 23 watts. (3-wire line cord, CSA-approved for oscilloscopes).
Miscellaneous Specifications:
Scale: Variable Illumination.
Mechanical Features: Carrying handle for tild stand.
For Use with Models: PR-35, PR-36, PR-37 and more.
Attenuation: Combination 10:1 and direct.
Input Impedance: 10:1 = 10 megohms, 18 pF. Direct = 1 megohm, 120 pF.
Tip: Spring-loaded hook-on tip.
For More Pictures Please Click the Following:
* Picture 2 - Front, Up-Close
