Keithley 194 901 01A free download

File name 194_901_01A.pdf

Instruction Manual Model 194 High Speed Voltmeter 01985, Keithley Instruments, Inc. Instrument Division Cleveland, Ohio, U.S.A. Document Number: 194-901-01 Rev. A SAFETY PRECAUTIONS The following safety precautions should be observed before using the Model 194. This instrument is intended for use by qualified personnel who recognize shock hazards and arc famili.lr with the safety precautions required to avoid possible injury. Read over this manual carefully before operating the instrument. Exercise extreme caution when a shock hazard is present at the instrument's input. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than 3OV RMS 01 42.4V peak are present. A good safety practice is to expect that a hazardous voltage is present in any unknown circuit before measurement. Do not exceed 3OV RMS between input low and earth ground. Inspect your test leads for possible wear, cracks, or breaks before coach use. For maximum safety, do not touch the test leads or the instrument while power is applied to the circuit undrr test. Turn the power off and discharge all capacitors before connecting or disconnecting the instrument. Do not touch any object which could provide a current path to the common side of thr circuit under test or power line (earth) ground. Always make measurements with dry hands while standing on `1 dry, insulated surface capable of withstanding the voltage being measured. Do not exceed the instrument's maximum allowable input as defined in the specifications and operation section of this manual. SPECIFICATIONS CHANNEL 1 -- ~..l..y.~.I...u..~u MATH FUNCTIONS INPUT IMPEDANCE: l.lMt, (I.OMll on 200" range) shunted by <47pF. A"ERAGE: ~1% = v..., " MAXIMUM ALLOWABLE INPUT: 250" peak, 2xlO'V*Hz. PEAK TO PEAK: Difference between maximum and minimum v.,,ws MAXIMUM COMMON MODE VOLTAGE: 30" rms, 42V Peak, of samples. SxlO~".Hz. PLUS PEAK: Maximum va,w of samples. COMMON MODE RE,ECTfON RATIO: >6OdS at dc to IkHz, IkR unbalance. MINUS PEAK: Minimum value of samplcs~ DIFFERENTIAL NONLINEARITY: Ih-Bit: 52 LSD. 8 bit: 50.5 LSB. TEMPERATURE COEFFlClENT (Of'-18T & **^-5o"c,: < -t(O.l Y