Instruction manual

30
Preparations
Using the Menu Screens
The NA-27 has four types of menu screens, namely SETUP, MEMORY, DISPLAY, and
I/O. Basic operation principles are the same for all four screens.
The following example explains how to use the SETUP menu screen to set the L
eq
mea-
surement time to 10 minutes and the time constant for the sub channel to "SLOW".
1. Press the SETUP key.
The SETUP menu screen appears.
2. Use the or key to move the cursor to the "L
eq
Time" item.
3. The parameter indication shows "1 S" (current setting is "1 second").
The underline indicates where a change is possible.
4. Use the INC and DEC keys to set the value to "10".
With each push of the INC key, the value increases by 1. With each push of the
DEC key, the value decreases by 1. Holding a key down causes the values to change
continuously.
5. Use the key to move the underline to "S".
6. Use the INC and DEC keys to change "S" to "M".
7. Press the ENTER key. The parameter indication becomes "10M" (10 minutes), and
the cursor moves to the "Lx Time" item.
8. Use the key to move the cursor to the "SUB TIME CONST" item.
9. The parameter indication shows "FAST SLOW 35ms 10ms IMPULSE" (indicating
that the current setting is "FAST").
10. Use the or key to move the underline to "SLOW".