Keithley 2308, Руководство пользователя

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12-14 Return to Section Topics 2308-900-01 Rev. A / July 2008
Section 12: Performance Verification Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Figure 12-5
Connections for 5 mA current verification tests
2. Select the multimeter DC volts measuring function, and enable auto range.
3. Press the or keys to select channel #1 . Select the 5 mA readback range and actual
current reading data.
4. Turn on the output.
5. Verify 5 mA range current readback accuracy for the currents listed in Table 12-8 . For each
test point:
• Set the output current to the correct value, as determined from the digital multimeter voltage
reading and 3 k
Ω
resistance value.
• Allow the reading to settle.
• Verify that the actual current reading is within the limits given in the table.
6. Repeat steps 1 through 5 for Channel #2 (use the or keys to toggle between Channel
#1 and Channel #2).
NOTE
It may not be possible 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.
Table 12-8
5 mA range current readback accuracy limits
*
Nominal output
Voltage Model 2308
output current
**
Current readback limits
(2 Years, 18°C-28°C)
3 V 1.0000 mA 0.9970 to 1.0030 mA
*Check the complete Model 2308 Specifications at www.keithley.com for updated
current readback accuracy limits before verification.
** As measured by digital multimeter voltage reading and 3 k
Ω
resistance value.
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
MADE IN
U.S.A.
LINE RATING
100-120VAC, 200-240VAC
50, 60 HZ 165VA MAX
LINE FUSE
SLOWBLOW
2.0A, 250V
IEEE-488
(ENTER IEEE ADDRESS
FROM FRONT PANEL MENU)
REMOTE
DISPLAY
OPTION
+ + + _
_ _
SOURCE SENSE SOURCE
OUTPUT #1
ISOLATION FROM EARTH: 22 VOLTS MAX MAX.
RELAY
CONTROL
24VDC MAX
DVM IN
-30 VDC MAX
ANALOG
OUT
mA
(5/50)
A
(0.5/5)
+ + + _
_ _ _
+
SOURCE SENSE DVM IN SOURCE
OUTPUT #2
NEXT
PREV
POWER
DISPLAY
2001 MULTIMETER
DCV ACV DCI ACI ý2 ý4 FREQ TEMP
REL TRIG
INFO LOCAL EXITENT ER
RANGE
RANGE
!
F R
500V
PEAK
FRONT/REAR
2A 250V
AMPS
CAL
STORE RECALL
CHAN SCAN
FILTER MATH
CONFIG MENU
HI
INPUT
LO
SENSE
ý 4 WIRE
INPUTS
350V
PEAK
1100V
PEAK
AUTO
Model 2001 DMM
Model 2308
Input LO
Input HI
Source -
3 k W Resistor
Note: Use 4-wire connections
to resistor terminals.
Sense -
Sense +
OUTPUT #1 connections
shown. Use OUTPUT #2
for Charger Channel.
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