Larson Davis 831C-FFT, Reference Manual, Page: 22 / 254

SoundAdvisor Model 831C Instrument Hardware Overview 17
FIGURE 2-6
Instrument Hardware
2.3.1 Using 831C Buttons
The 831C has 13 buttons that are used to start, stop, or pause a measurement; navigate
within the display, and power the meter off. To navigate the display on the meter, you can
press directly on the touchscreen using the tip of your finger, or use the navigation buttons
as shown in Table 2.1 .
CAUTION
DO NOT use the hardware
power switch to turn the 831C
ON or OFF. The purpose of this
switch is to disconnect the bat-
teries for long-term storage (1
to 2 weeks). See 2.1.4 "Prepar-
ing the 831C for Long Term
Storage" on page 11 .
CAUTION
DO NOT use the AC/DC port as
1.
AUX
connector intended for use with USB mass
storage, cellular modem, GPS, headphones, speak-
ers, and future devices.
2.
Hardware Power Switch when set to “ 0 ”
completely powers down the 831C for storage. Set to
“ | ” for instrument operation.
3.
USB
Interface 2.0 peripheral full-speed port used for
communication, full control, and downloading of
data to PC. The PSA029 external power supply may
be connected here. The maximum USB cable length
is 1m and the cable is part number CBL138.
4.
AC/DC 2.5 mm Output jack for analog AC/DC output
signals.
5.
The I/O Connector for peripherals and external
power is typically used for external devices.