A Oscilloscope Operating and Service Manual. Part Number: ( Aug 76). The A is no longer sold by Keysight; this manual is provided for. To buy, sell, rent or trade-in this product please click on the link below: http://www ยท MODEL A. OSCILLOSCOPE. HEWLETT-PACKARD COMPANY/ COLORADO SPRINGS DIVISION. GARDEN OF THE GODS ROAD, COLORADO.

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The A and test equipment should be operated at normal line voltage, with the A line selector switch set to the correct positions for corresponding input line voltage. Change A7L3 and A7L7 to 8. Signal conditioning is accomplished primarily by two substrates: Change value to 0. The Hewlett-Packard Model A is a dual- ph, MHz, delayed sweep oscilloscope de- signed for general-purpose bench or field use.

Full text of “HP: A”

Adjusting lowering the vertical posion pot only lowers the top part of the square pulse signal trace, the botton trace of the signal is fixed right at the botton of the screen, and does not move. Disconnect equipment and return controls to initial settings.

Disconnect delay line wires 46and 0 from back of 17440a. Perform external triggering test as follows: Hi Eric Not much luck in h search for the spares. Option circuits on assembly A14 operate as follows. Inter- nal trigger signal amplitude approximates vertical signal amplitude. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture t and Intended use of the instrument.

This section contains information required to backdate or update this manual for a specific instru- ment. A5A1 Removal If the auction has a make offer option, take advantage hhp it.


Keysight Technologies (Agilent HP) A used or new for sale at used-line

NG Un useable trigger mode. I would suggest the most likely cause is the large hybrid output device, labelled A5A1? Gain and position of the vertical and horizontal sections are controlled from the logic state analyzer.

A3A1 Removal This will help determine if the problem is on A3 or A7. In the delayed mode of operation, this level is fixed at 1 volt, but in the mixed sweep mode of operation this reference is connected to th y main sweep ramp. Interconnection Diagram Sheet 1 of 2.

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This arms the second Schmitt trigger. Position slotted portion of open rotor section as noted in step c. Remove four screws that hold A5 and bracket to chassis, and remove assembly. Turn Delayed Sweep to.

These chips perform the conventional control functions 1704a signal polarity, gain vernier, channel switching, and sync extraction; in addition, they control six ranges of vertical sensitivity. Set front-panel controls in accordance with initial control settings in Section V. Gate Control Simplified Block Diagram I will now proceed with your other modification and advise you of the results tomorrow.

This provides the necessary ground connections for assembly A Current source transistor A7Q24 provides bias for shunt feedback stage A7Q Adjust oscillator for 1740 1-kHz signal with 8 divisions of h; deflection. Disconnect and wires from rear of A 140a power cable must either jp plugged into an approved three-contact electrical outlet or used with a three-contact to two-contact adapter with the grounding wire green firmly connected to an electrical ground safety ground at the power outlet The power jack and mating plug of the power cable meet International Electrotechnical Commission IEC safety standards.


Adjust A12R16, Y-align, until left side of raster is parallel to vertical graticule lines. This allows the sweep fJ trigger before the vertical signal reaches the CRT plates. These resistors control current ratios determining the gain of analog multiplier sections in each channel. All power supply voltages are OK. These ad justments utilize the accuracy of the DELAY dial to calibrate main sweep more accurately than is possible using the visual method paragraph To reinstall A 13, reverse removal procedure.

The CRT cathode and grid voltages are devel- oped in the secondary of high-voltage transformer A15T1. Operating personnel must not remove instrument covers. This turns A8Q3 off.

Dec Thu 12, 4: The positive-going ramp of the main sweep is also applied to pin 9 of delay comparator A7U4, which controls arming of the delayed sweep. The set and trigger gates drive a current switch that starts the sweep.

Disconnect nine wires on component side of A Gate Amplifier Assembly Removal d. Input impedance is selectable 50 ohms or 1 megohm to meet various measurement requirements. The unrectified cathode voltage in the second- ary of the high-voltage transformer 11740a applied to a multiplier assembly where it is multiplied four times.

Center screen indicates the trigger thres- hold level with respect to the trigger signal.