Keithley 2750 User Manual

6-6 Buffer Model 2750 Multimeter/Switch System User’s Manual
Recalling readings
Readings stored in the buffer are displayed by pressing the RECALL key. The readings are
positioned at the left side of the display, while the buffer location number (reading num-
ber) and timestamps are positioned at the right side.
Perform the following steps to view stored readings and buffer statistics:
1. Press RECALL. The “BUFFER” annunciator indicates that stored readings are
being displayed. The double-arrow annunciator indicates that more data can be
viewed with the , ,
Δ , and ∇ keys.
2. As shown in Figure 6-1 and Figure 6-2, use the , ,
Δ , and ∇ keys to navigate
through the reading numbers, reading values, statistics, and timestamps. For any of
the buffer statistics (standard deviation, average, peak-to-peak, minimum, and
maximum), the “STAT” annunciator is on.
NOTE The longer you hold in the
Δ or ∇ key, the faster you will scroll through the
buffer. After a while, scrolling speed will increase by incrementing (or decre-
menting) the buffer reading number by 100, and then finally by 500. When you
get close to the desired reading number, release the
Δ or ∇ key. Again press
and hold in the
Δ or ∇ key to scroll one reading at a time.
Figure 6-1
Recalling buffer data — relative timestamp
RDG NO. 10 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 9 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 8 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 7 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 6 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 5 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 4 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 3 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 2 Reading Value Absolute Timestamp Delta Timestamp
RDG NO. 1 Reading Value Absolute Timestamp Delta Timestamp
STD DEV Standard Deviation Value No Timestamp
Average Average Value No Timestamp
Peak-to-Peak Peak-to-Peak Value No Timestamp
Min At XX Minimum Value Absolute Timestamp Delta Timestamp
Max At XX Maximum Value Absolute Timestamp Delta Timestamp
RANGE
RANGE
2750-900-01.book Page 6 Wednesday, August 3, 2011 7:56 AM

Keithley 2750 Specifications

General

Brand	Keithley
Model	2750
Category	Switch
Language	English