741B/743B
Users Manual
16
Table 3. Key Functions (cont.)
No. Name Description
10 u, d, L, and R
keys
• Adjust the display contrast.
• Make choices from lists on the display.
• Increase or decrease the source level when using the step feature.
• In calculator mode, provide arithmetic functions (+ - ÷ ×).
11
e
key Terminates a numeric entry when setting a source value, or confirms your choice in a
list. In calculator mode, provides the equals arithmetic operator (=).
12
q
key Toggles between resistance and continuity functions in MEASURE mode, or selects
the resistance function in SOURCE mode.
13 Numeric keypad Used whenever a numeric entry is required.
14
h
key Toggles between ac voltage and frequency functions in MEASURE mode, or selects
frequency output in SOURCE mode.
15
v
key Selects the dc voltage function in MEASURE mode, or selects dc voltage in SOURCE
mode.
16
o
key Turns the power on and off.
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