Keithley 2700 User Manual

Model 2700 Multimeter/Switch System User’s Manual Status Structure 11-15
Measurement event register
The used bits of the Measurement Event Register (Figure 11-6) are described as follows:
• Bit B0, Reading Overflow (ROF) — Set bit indicates that the reading exceeds the
measurement range of the instrument.
• Bit B1, Low Limit 1 Event (LL1) — Set bit indicates that a reading has reached or
exceeded Low Limit 1.
• Bit B2, High Limit 1 Event (HL1) — Set bit indicates that a reading has reached
or exceeded High Limit 1.
• Bit B3, Low Limit 2 Event (LL2) — Set bit indicates that a reading has reached or
exceeded Low Limit 2.
• Bit B4, High Limit 2 Fail (HL2) — Set bit indicates that a reading has reached or
exceeded High Limit 2.
• Bit B5, Reading Available (RAV) — Set bit indicates that a reading was taken and
processed.
NOTE A programming example to read the RAV bit is provided in “Example 2 – Read
RAV bit of measurement event register” on page 11-20.
• Bit B6, Buffer Notify (BN) — Set bit is a notification that the user-specified
number of readings have been stored in the buffer. The TRACe:NOTify command
specifies the number of stored readings that will set this bit (see
Section 6 for
details).
• Bit B7, Buffer Available (BAV) — Set bit indicates that there are at least two
readings in the buffer.
• Bit B8, Buffer Half Full (BHF) — Set bit indicates that the trace buffer is half
full.
• Bit B9, Buffer Full (BF) — Set bit indicates that the trace buffer is full.
NOTE A programming example to read the BHF bit is provided in “Example 3 – Read
BHF bit of measurement event register” on page 11-21.
• Bit B10, Buffer Overflow (BOF) — Set bit indicates that the filled buffer has
wrapped and written over previously stored readings.
• Bit B11, Hardware Limit Event (HL) — Set bit indicates that a reading has
exceeded the hardware limit.
• Bit B12, Buffer Quarter Full (BQF) — Set bit indicates that the trace buffer is
one-quarter full.
NOTE Bits B12 ( G full) and B13 ( I full) are not intended to be used with buffer sizes
smaller than four readings.

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