Keithley 2701 User Manual

1-4 Getting Started Model 2701 User’s Manual
Battery
The Model 2701 uses battery-backed memory for the 450,000 reading buffer. A fully
charged battery will maintain storage of readings for 30 days (at 23°C). At 50°C, the stor-
age period is degraded to approximately 15 days. See Appendix A for specifications on
the rechargeable lithium ion battery.
The battery is warranted for 90 days. However, at 23°C, the battery will typically last three
years. See Section 3 of the Model 2701 Service Manual to replace the battery. The
Keithley part number for the battery is BA-52.
Options and accessories
Plug-in switching modules
NOTE Table 1-1 provides a side-by-side comparison of the following Keithley switch-
ing modules. All multiplexer modules can be configured as two independent
multiplexers.
NOTE The Model 77xx Series Switching Modules Instruction Manual provides operat-
ing and service information for the switching modules. This manual is supplied
with each switching module.
Model 7700 — This differential multiplexer provides 20 channels of 2-pole input or 10
channels of 4-pole input. The internal cold junction allows direct-connection of thermo-
couples. It also has two 2-pole channels used exclusively for current input.
Model 7701 — This differential multiplexer provides 32 channels of 2-pole input or 16
channels of 4-pole input.
Model 7702 — This differential multiplexer provides 40 channels of 2-pole input or
20 channels of 4-pole input. It also has two 2-pole channels used exclusively for current
input.
Model 7703 — This differential multiplexer provides 32 channels of 2-pole input or
16 channels of 4-pole input.
Model 7705 — This control module provides 40 independent 1-pole switching (SPST)
channels that are isolated from the internal DMM.
Model 7706 — This all-in-one module provides 20/10 channels of 2/4-pole input,
16 digital outputs, two analog outputs, and one 32-bit counter with gating and totalizer.
Model 7707 — This module provides 10 channels of 2-pole input or 5 channels of 4-pole
input. Also provides four independent 8-byte digital I/O channels.
Model 7708 — This differential multiplexer provides 40 channels of 2-pole input or
20 channels of 4-pole input. The internal cold junction allows direct-connection of
thermocouples for temperature measurements.

Keithley 2701 Specifications

General

Max Voltage	300 V
Max Current	3 A
Frequency Range	3 Hz to 500 kHz
Frequency Accuracy	0.01%
Weight	3.6 kg
Measurement Functions	Frequency, Temperature
Interface	IEEE-488 (GPIB), RS-232
DC Voltage Range	300 V
DC Current Range	3 A
AC Voltage Range	300V
AC Current Range	1 μA to 3 A
Resistance Accuracy	0.01%
Channels	10
Dimensions	213mm x 88mm x 370mm