Keithley 2303, Руководство по обслуживанию, Страница: 23 / 104

1-12 Performance Verification
Figure 1-5
Connections for Model 2303-PJ 500mA current verification tests
2. Select the multimeter DC volts measuring function, and enable auto-range.
3. Select the 500mA readback range and actual current reading data.
4. Turn on the Model 2303-PJ output.
5. Verify 500mA range current readback accuracy for the currents listed in Table 1-7. For
each test point:
• Set the Model 2303-PJ output current to the correct value, as determined from the dig-
ital multimeter voltage reading and 30
Ω
resistance value. Note that it may not be pos-
sible to set the output current to the exact value. In that case, set the current to the
closest possible value, and modify reading limits accordingly.
• Allow the reading to settle.
• Verify that the actual Model 2303-PJ current reading is within the limits given in the
table.
NEXT
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POWER
DISPLAY
2001 MULTIMETER
DCV ACV DCI ACI
Ω
2
Ω
4
FREQ TEMP
REL TRIG
INFO LOCAL EXIT ENTER
RANGE
RANGE
!
F R
500V
PEAK
FRONT/REAR
2A 250V
AMPS
CAL
ST ORE RECALL
CHAN SCAN
FILTER MATH
CONFIGMENU
HI
INPUT
LO
SENSE
Ω
4 WIRE
INPUTS
350V
PEAK 1100V
PEAK
AUTO
W ARNING:
NO INTERNAL OPERAT OR SERVICABLE PAR TS,SERVICE BY QU ALIFIED PERSONNEL ONLY.
WARNING:
NO INTERNAL OPERAT OR SERVICABLE PARTS,SER VICE BY QU ALIFIED PERSONNEL ONL Y.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RA TING.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
MADE IN
U.S.A.
LINE RATING
100-240V AC
50, 60 HZ
185VA MAX
LINE FUSE
SLOWBLO W
2.5A, 250V
IEEE-488
(CHANGE IEEE ADDRESS
WITH FR ONT PANEL MENU)
REMO TE
DISPLAY
OPTION
ISOLATION FROM EARTH:
22 VOL TS MAX.
+ + +
_ _ _ _
+
SOURCE SENSE D VM IN SOURCE
OUTPUT
0-20V, 0-5A
Model 2001 DMM
Model 2303
Input LO
Input HI
Source -
3k
Ω
Resistor
Note: Use 4-wire connections
to resistor terminals.
Sense -
Sense +
深圳德标仪器
135-1095-0799