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 · MODEL A. OSCILLOSCOPE. HEWLETT-PACKARD COMPANY/ COLORADO SPRINGS DIVISION. GARDEN OF THE GODS ROAD, COLORADO.
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Holdoff Circuit Fast-rise Pulse Generator a. This arms the second Schmitt trigger.
Magnifies the vertical presenta- tion five times, and increases the maxi- mum sensitivity t” I mV div. The channel A input Y-axis is plotted versus the channel B input X-axis. Connect digital voltmeter to A3TP9. To reinstall IC, reverse removal procedure; be certain that orientation of parts is as shown in figure HF Reject Main Sweep: Adjustment Locations 6- 1.
Depress vertical MAG X5 switch. Disconnect ac input leads 90 and This condition ensures that both channels are off 4. Schematics 1740w, 11, and Attenuator Assemblies Since channels A and B are almost identical, only channel A will be described in detail. Disconnect 2 and 9 wires from A1 1. Repeat steps b through e until intensified dot is on second vertical graticule line when DELAY con- trol is a 1.
1740s, rise time, or pulse response pro- blems can be caused by dirty CRT neck pins or by a faulty delay line.
A User Manual – A Oscilloscope from HP
The wiper of A16R26 is connected to the inverting input of the differential amplifier. If A3R90 is changed, recheck steps m and n for correct balance. In TRIG, the de- layed -trigger circuit is armed after the delay interval and delayed sweep must be triggered by either an internal or external trigger signal.
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.
HP 1740A Hewlett Packard 100 MHz 2 Channel Oscilloscope
Coupling channel A 50Q 2. Remove A9 by 1740s rocking board toward rear of instrument to disconnect it from the two con- nectors. Set, Model A controls as follows: Selects the input coupling and imped- i ance for the vertical amplifiers.
Dec Thu 12, 8: A VS B Control. Dec Mon 31, 8: There’s an amazing amount of engineering that goes into a probe; it’s not just a piece of coax with a pointy end on it. I do have an attachment to this scope.
To reinstall A 13, reverse removal procedure. Ground position disconnects input connector and grounds amplifier input. Th is section of the manual contains the perform- ance specifications for the Model A, and a list 1470a the options available.
HP 1740A Oscilloscope – Repair HELP!!!
Option incorporates the following changes to the standard Model A: Note rf voltmeter indication. When load current through A16R24 produces a sufficient voltage drop, the NPN transistor conducts, pulling the input to the Darlington pair toward the emitter potential of Q4.
Option is designed for optimum per- formance with the HP Model A Logic State An- alyzer to provide both digital logical state and hhp electrical analysis.
Refer to table for other variations in ambient temperatures. At the end of holdoff, the holdoff comparator develops a reset signal that is applied to the first Schmitt trigger.