Keithley 194 Instruction Manual page 3

High speed voltmeter
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SPECIFICATIONS
CHANNEL
1
--
~..l..y.~.I...u..~u
INPUT IMPEDANCE:
l.lMt,
(I.OMll
on 200" range) shunted
by
<47pF.
MAXIMUM
ALLOWABLE
INPUT:
250" peak, 2xlO'V*Hz.
MAXIMUM
COMMON
MODE
VOLTAGE:
30" rms, 42V Peak,
SxlO~".Hz.
COMMON
MODE RE,ECTfON
RATIO:
>6OdS at dc to IkHz,
IkR
unbalance.
DIFFERENTIAL
NONLINEARITY:
Ih-Bit: 52 LSD. 8 bit: 50.5 LSB.
TEMPERATURE
COEFFlClENT
(Of'-18T
& **^-5o"c,:
< -t(O.l Y
applicable
accuracy specification)i"C.
DYNAMIC
CHARACTERISTICS
16 BIT
8 BIT
Minimum
Sample Rate
10,s (;;ktfz)
1ps (IMHz)
Maximum
Sample Rate
IS
Sample Rate Resolution
lOOX
loons
Number
of Samples
1 to 32k
1 t" 65k
Sample interval
Accuracy
(typical,
excluding
time base
accuracy,
0.4"s
2ns
SIGNALINOISE
RATIO:
5OdB for full range IOOkHz sine input.
SLEW RATE: 13"lps minimum.
SETTLING
TIME:
1 gs to 0.1% of final value.
CHANNEL
CROSSTALK:
<6OdB at SOOkHz.
INPUT
CO"PI.ING:
Ac, dc, ground.
FREQUENCY
RBSPONSE (Filter Off,:
O.ZdB
IdlJ
3dB
dc (15Hz)
20kHz
dc @Hz)
20OkHz
dc (2Hz)
750kt tz
( ) indicates
ac coupled performance.
LOW PASS FILTER:
50kHz, 500kHz, single pole.
TRIGGER
CHARACTERISTICS
DELAY:
Pm-Trigger:
-Zk<n<-1,Mbitmode;
-@kc"<-1.8.bitmod
In/ samples are stored prior to triggering.
Past-Trigger:
1 <n < 1 x 10'. Storage begins "n"
samples after tri
gWi"g.
TRIGGER:
SOURCE
DESCRlPTlON
Input Signal
Slope: + or
Level: Selectable over input voltage
range and resolution.
External:
Negative
TTL edge.
Front Pane,:
Manual pushbutton.
IEEE-488 Interface:
16 programmable
trigger modes.
Other Channel:
,nterna,,y
generated.
TIMESASE:
Internal:
IOMHZ *o.o*%.
Extenta,:
IOMHZ nominal,
Tn..
e.
6.
I
MATH
FUNCTIONS
A"ERAGE:
~1%
"
= v...,
PEAK TO PEAK: Difference between maximum and minimum v.,,ws
of samples.
PLUS PEAK: Maximum
va,w
of samples.
MINUS
PEAK: Minimum
value of samplcs~
II I
z: (V, -TV...,'
STANDARD
DE",AT,ON:
s-u
II
TRUE
ROOT MEAN
SQUARE:
II
n
2
INTEGRAL:
('I*".+%"..,+
,F, V.) 1,
DIFFERENCE:
Channel
1
Channrl
2,
RATIO:
Channel
1 / Chnnncl 2.
v,: Voltage of sanlple i,
n: Total number of samples,
i: Locn,ion of individual
ssmplc.
t,: Sample intewa,.
ANALOG
OUTPUT
MODES
0"TPuTS
USED
CRT
x, y, z (blanking)
Oscilloscope
y, % (trigger)
Slow Plot
x, y, z (pen upidown)
Strip Chart
y
x OurPUT:
O-10" I",, scale. 2.44mV rfS"I"ti0".
Y OUTPIJT:
0.,ov
full scale, 2.44mV rCSO,"ti"n
z 0"TP"T:
0". 5v or 15".
ZOOM
MAGNIFICATION:
O.,:, to 1O"O:l
PAN: Across entire memory.
REAL TIME
(DMA)
OUTPUT
FORMAT:
Binary,
I&bit
or S-bit.
RATE: Same as Sample Rate.
CONTROL
LINES: End of Sample, Overrun,
tligh Byte. I.ow t,yW

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