3M DL, SE user manual Calibration, Studies and sessions, Special features, Other, Security

132Appendix A

Other

Maximum peak level - 3 dB over the full scale reading.

Calibration

Pre-calibration- When performed, valid prior to the start of a session. Post-calibration- When performed, valid for the previous study in the ses- sion.

Storage - All calibrations for a session are stored in the related session file. Calibrators - All 3M Calibrators have an output of 114dB at 1 kHz, and some may have other settings. See “Preparing to calibrate” in Chapter 6) or additional information about calibrators.

Studies and sessions

Run-time clock - Duration of every run and session shown in screens as well as added to the session file.

Manual operation - Run, Pause and Stop keys. Programmed operation - Three Auto-Run modes:

•Date (four options).

•Day of the week (any time on any day).

•Timed (future start time).

Triggered runs - Trigger on measured SPL or on external input. Triggers can start a study, then either pause in the session or stop the session. Triggered outputs - Output logic signals related to run status.

Special features

Security

Runs - Prevents the pausing of a study without first providing a 4-digit code. Setups - Prevents the changing of settings without first providing a 4-digit code.

Codes - Run and setup security can use different codes.

Models SE and DL