H-25C Instruction Manual
Instruction 3015-0216
25
2.8
Adjusting the Speaker Tone Volume
The speaker volume is adjustable. Adjust if necessary (to the appropriate level for the area where you will
use the instrument) using the tones heard while performing the calibration operation of Section 2.7.
The volume is adjusted using the variable resistor labeled “AUDIO” in the setup area.
2.9
Allowing Air to Flow at the End of Preparation
Completing the setup operations through Section 2.8 completes the preparations for use.
If you are not going to begin measurements immediately, let the instrument suck in clean air for at least one
minute, and then set the power switch to OFF.
Note: Set the MODE switch to B-type measurement mode when checking operations in A-type
measurement mode.
(When detecting leaks in a normal atmosphere, set the switch to B-type.)
