Keithley 2700 User Manual

2-10 Close/Open Switching Module Channels Model 2700 Multimeter/Switch System User’s Manual
CLOSE key (SINGLE menu option)
The SINGLE menu option for the CLOSE key can be used to select a measurement
channel as the system channel (
Figure 2-4). Perform the following steps to select the
system channel:
1. Press the CLOSE key. The “CLOSE:SINGLE” message will be displayed.
NOTE If the “CLOSE:MULTI” message is instead displayed when CLOSE is pressed,
it indicates that there are no measurement modules installed in the mainframe.
See
“Multiple channel operation,” page 2-16, to close the channels of a non-
measurement module (i.e., Model 7705).
2. Press ENTER to display the prompt to close a channel (CLOSE CH: XXX).
3. Using , , Δ, and ∇, key in the three-digit channel you want to select.
4. Press ENTER. The channel closes and the CHAN annunciator turns on.
An invalid channel cannot be closed and will cause one of the following error messages to
be briefly displayed:
INVALID CHAN — This message indicates that the channel is not a valid measurement
channel. The following actions will cause this error:
• Trying to close a non-measurement channel, such as a backplane isolation channel,
a channel that sets the pole mode, or a channel that cannot be internally connected
to the DMM.
• Trying to close an amps channel while on a non-amps function. The DCI or ACI
function must be selected in order to close an amps channel.
• Trying to close a paired-channel while on a 4-wire function. For the Model 7700,
channels 1 through 10 are paired to channels 11 through 20 for a 4-wire function.
If, for example, you try to close channel 12 while on the Ω4 function, the INVALID
CHAN error will occur.
• Trying to close a switching module channel that does not exist.
TOO SMALL or TOO LARGE — These messages also indicate an invalid channel. TOO
SMALL indicates that the specified channel and any other lower numbered channel is
invalid. TOO LARGE indicates that the specified channel and any other higher numbered
channel is invalid.
Figure 2-4
System channel operation — specifying measurement channel to close
CLOSEOPEN
CLOSE CH: XXX
CLOSE:SINGLE
Press CLOSE key
Display SINGLE option
and press ENTER
Specify channel number (XXX)
and press ENTER

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