Keithley 2700 User Manual

9-16 Limits and Digital I/O Model 2700 Multimeter/Switch System User’s Manual
Limit 1 will be used to test for the 1% tolerance and Limit 2 will be used to test for the 5%
tolerance.
The resistance values for the 1% and 5% tolerances are calculated as follows:
R
1%
= 100Ω × 1% R
5%
= 100Ω × 5%
= 100Ω × 0.01 = 100Ω × 0.05
= 1Ω = 5Ω
The high and low limits are then calculated as follows:
HI Limit 1 = 100Ω + R
1%
HI Limit 2 = 100Ω + R
5%
= 100Ω + 1Ω = 100Ω + 5Ω
= 101Ω = 105Ω
LO Limit 1 = 100Ω – R
1%
LO Limit 2 = 100Ω – R
5%
= 100Ω – 1Ω = 100Ω – 5Ω
= 99Ω = 95Ω
The limits are illustrated in Figure 9-7.
Figure 9-7
Limits to sort 100Ω resistors (1%, 5%, and >5%)
Front Panel Operation — For front panel operation, the INSIDE beeper mode must be
used. A normal pitch beep and the message IN indicates that the resistor is within the 1%
tolerance limit (
Figure 9-7). This 1% resistor belongs in Bin 1. A raspy beep and the “1”
message indicates that the resistor is >1% tolerance but <5% tolerance. This 5% resistor
belongs in Bin 2. For resistors >5%, no beep will sound. Place these resistors in Bin 3.
100Ω 101Ω
HI1
105Ω
HI2
95Ω
LO2
99Ω
LO1
Limit 1 (1%)
Limit 2 (5%)
LOW IN
HIGH
Beep
(Normal Pitch)
Beep
(Low Pitch)
Beep
(Low Pitch)
No Beep
No Beep

Keithley 2700 Specifications

General

Type	Digital Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Temperature Range	-200°C to +1372°C
Display	Vacuum Fluorescent Display
Connectivity	IEEE-488, RS-232
Channels	10
Power Supply	100V to 240V AC, 45Hz to 66Hz
DC Current Range	10 µA to 3 A
AC Current Range	10 µA to 3 A
Temperature Measurement	Thermocouple, RTD