Related Manuals for AVTECH ELECTROSYSTEMS AV-151F-C
Summary of Contents for AVTECH ELECTROSYSTEMS AV-151F-C
- Page 1 INSTRUCTIONS MODEL AV-151F-C 0 to 2 AMP, 20 kHz CURRENT-OUTPUT FUNCTION GENERATOR VOLTAGE-TO-CURRENT CONVERTER SERIAL NUMBER: ____________...
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Page 2: Warranty
WARRANTY Avtech Electrosystems Ltd. warrants products of its manufacture to be free from defects in material and workmanship under conditions of normal use. If, within one year after delivery to the original owner, and after prepaid return by the original owner, this Avtech product is found to be defective, Avtech shall at its option repair or replace said defective item. -
Page 3: Table Of Contents
TABLE OF CONTENTS WARRANTY__________________________________________________________________2 TECHNICAL SUPPORT________________________________________________________2 TABLE OF CONTENTS_________________________________________________________3 INTRODUCTION______________________________________________________________4 SPECIFICATIONS_____________________________________________________________4 INSTALLATION_______________________________________________________________5 VISUAL CHECK___________________________________________________________________5 PLUGGING IN THE INSTRUMENT__________________________________________________5 FRONT PANEL CONTROLS_____________________________________________________6 REAR PANEL CONTROLS______________________________________________________8 GENERAL INFORMATION_____________________________________________________9 BASIC PULSE CONTROL – INTERNAL MODE_______________________________________9 BASIC PULSE CONTROL – EXTERNAL MODE_______________________________________9 TOP COVER REMOVAL___________________________________________________________10 RACK MOUNTING________________________________________________________________10 OPEN AND SHORT CIRCUITS_____________________________________________________10 OPERATIONAL CHECK_______________________________________________________11... -
Page 4: Introduction
20 kHz, with amplitudes of 0 to ±2A, and a DC offset of 0 to ±0.5A. When supplied with an external voltage input, the AV-151F-C may be used as a DC to 20 kHz variable-gain voltage-to-current converter/amplifier. The gain is variable from 0 to +0.4 Amp/Volt. -
Page 5: Installation
INSTALLATION VISUAL CHECK After unpacking the instrument, examine to ensure that it has not been damaged in shipment. Visually inspect all connectors, knobs, liquid crystal displays (LCDs), and the handles. Confirm that a power cord and two instrumentation manuals (this manual and the “OP1B Interface Programming Manual”) are with the instrument. -
Page 6: Front Panel Controls
FRONT PANEL CONTROLS 1. POWER Switch . The POWER push button switch applies AC prime power to the primaries of the transformer, turning the instrument on. The push button lamp (#382 type) is connected to the +15V DC supply. 2. PRF Controls . Varies output pulse repetition frequency (PRF) as follows: Range 1 2 to 20 Hz Range 2... - Page 7 1 k) is provided at the TRIG BNC connector for the purpose of triggering a scope. When the two-position switch is in the EXT position, the AV-151F-C may be used as a DC-20 kHz variable-gain voltage-to-current converter/amplifier. The gain is variable from 0 to +0.4 Amp/Volt.
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Page 8: Rear Panel Controls
REAR PANEL CONTROLS 1. AC POWER INPUT . A three-pronged recessed male connector is provided on the back panel for AC power connection to the instrument. Also contained in this assembly is a 1A slow blow fuse and a removable card that can be removed and repositioned to switch between 120V AC in and 240V AC in. -
Page 9: General Information
A DC offset may also be added: BASIC PULSE CONTROL – EXTERNAL MODE When the “INT/EXT” switch is in the “EXT” position, the AV-151F-C may be used as a DC-20 kHz variable-gain voltage-to-current converter/amplifier. The gain is variable from 0 to +0.4 Amp/Volt, and is adjusted by rotating the amplitude control. -
Page 10: Top Cover Removal
A rack mounting kit is available. The -R5 rack mount kit may be installed after first removing the one Phillips screw on the side panel adjacent to the front handle. OPEN AND SHORT CIRCUITS The AV-151F-C will operate properly into a short circuit to ground, or into an open (i.e., unconnected) circuit. -
Page 11: Operational Check
3) Connect one oscilloscope probe (channel A) to the OUT load. On the oscilloscope, set the channel A vertical scale to 2 V/div, and the horizontal scale to 20 s/div. 4) Turn on the AV-151F-C. 5) Set the PRF range switch to the 20 kHz range, and rotate the PRF fine control fully clockwise. - Page 12 11)Observe the waveform as you switch between the sine, triangle, and square wave modes using the waveform switch. 12)Switch the Offset ON/OFF switch to “ON”, and rotate the offset ten-turn dial. The output waveform should shift vertically on the oscilloscope. 13)This completes the operational check.
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Page 13: Maintenance
MAINTENANCE CALIBRATION The output stage has five trimming potentiometers ("trimpots") that can be used to adjust the performance of the output circuit. These trimpots are preset at the factory and should not normally require adjusting after delivery. These controls can be accessed by removing the top panel of the instrument, and by locating the output-stage module. -
Page 14: Null Amplitude-Independent Offset
To adjust the output impedance, connect a 20W, 2.0 load to the output. Set the output amplitude to ±2A and observe the load voltage on an oscilloscope. The load voltage should have an amplitude of approximately ±4V (i.e. ±2A 2 = ±4V). Note the exact value. -
Page 15: Power Failure And Fuse Replacement
POWER FAILURE AND FUSE REPLACEMENT This instrument has three fuses (plus one spare). One, which protects the AC input, is located in the rear-panel power entry module, as described in the “Rear Panel Controls” section of this manual. If the power appears to have failed, check the AC fuse first. The other two fuses (plus one spare) are located on the internal DC power supply, as shown below: Negative... - Page 16 3. Turn on the instrument. 4. Observe the “Power OK” LEDs. If the fuses are not blown, the two LEDs will be lit (bright red). If one of the LEDs is not lit, the fuse next to it has blown. 5.
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Page 17: Performance Check Sheet
PERFORMANCE CHECK SHEET...
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