Inventis TRUMPET User Manual page 18

During an REM test, the instrument can operate only in FF (Free Field)
mode, and the power adapter must be connected (see chapter entitled 3
Installation).
The following table summarizes the tests that can be conducted in
audiometer mode.
Test
PURE TONE
AUDIOMETRY
AUTO-
THRESHOLD
SPEECH
AUDIOMETRY
MASTER
HEARING AID
Optional tests
QuickSIN
If the power adapter of the Trumpet is disconnected during an audiometry
exam, only AC (Air Conduction) and BC (Bone Conduction) modes remain
enabled, whereas FF (Free Field) mode is disabled. To enable free field
mode, the power adapter must be reconnected (see Chapter 3 Installation).
If the instrument is powered up only by way of the USB cable, the
maximum limits of the enabled outputs will be reduced by 10 dB.
12
Channel
Pure tone, warble,
Ch. 1
Ch. 2 NBN, WN
Ch. 1 Pure tone
MIC, (USB1,
Ch. 1
SN, WN, MIC
Ch. 2
(USB1, USB2)
MIC, (USB1,
Ch. 1
MIC, (USB1,
Ch. 2
Ch. 1 Pure tone, warble
Ch. 2
Inputs
NBN
USB2)
USB2)
USB2)
NBN
Outputs
AC, BC, FF
AC, BC, FF
AC
AC, BC, FF
AC, BC, FF
AC
AC
AC, FF
AC, FF