Larson Davis SoundAdvisor Reference Manual page 151

NiMH Charge Time: USB to power outlet (not PC),
meter powered OFF during charging 16 hours
Typical Operating Time:
measurement
E ternal Power
Via USB Client Connector: Powered by computer
or PSA029 Power Adapter, 5.0 0.5 V typical, 16 V
absolute maximum
E ternal DC Power Supply
Provides power to operate instrument, supply USB
Host port with 500mA, and charge batteries
Recommended Supplies: Use cable CBL140 with
PSA027, CBL154 for 426A12, or Model 831-INT
Interface with Mains and battery supplies
Voltage: +10 to +25 V
Supply Current Re uirement: 1.0 A minimum
Power Consumption: 1.1 W (display off, running,
no USB Host devices, not charging)
2 W (display & backlight on, no USB Host devices,
not charging)
5.4 W (with 2.5 W USB Host power and charging)
Accessory Power Consumption:
831-MEM32G USB Memory, 32GB: +0.6 W
DV 012 Ethernet Adaptor: +1.8 W
DV 014 WiFi Adapter: +0.7 W
Table A.3 Low Power At oot Up
Power Power
Parameters
Level Source
External External
Shutoff
Voltage
+ 0.8 V
Internal 4.2 V
External External
Shutoff
Voltage
+ 0.5 V
Internal 4.1 V
SoundAdvisor Model 831C
8 hours continuous
Icon Action
Warning
Only
1
Halts
boot-up
process
Halts
boot-up
process
and
shuts
down.
Table A.3 Low Power At oot Up Continued
Power Power
Parameters
Level Source
External
Internal
1. The External Shutoff Voltage is a user defined set-
ting, see 9.4.6 Setting the External Shutoff Volt-
age on page 9-5
2. The boot up process halts for one minute, if power
is not restored within one minute, then the meter
will shut off for a period of time before powering
back on. When the meter powers back on is deter-
mined by the number of times trying to boot with
failed power, see Table A.4.
Table A.4 Power On After E ternal Power
Fail Schedule
Powers On
1st Attempt
2nd Attempt
3rd Attempt
4th Attempt
5th Attempt
6th Attempt
7th - 16th Attempt
Power on Time
2 minutes
Real Time Clock
Drift 0.3 s drift pe r 24 hour pe riod ove r full
operating temperature range, battery back-up
powered
Backup Time 1 year rechargeable battery backup
Data Storage
Internal: 2 GB non-volatile flash me mory
dedicated to data and user setups
Exte rnal: Up to 32 gigabyte USB Flash Me mory
2
Drive
Electrostatic Discharge
The instrument is not adversely affected by
electrostatic discharges.
En ironmental Conditions
Operating Temperature: –30 to +50°C (–22 to
122°F)
Icon
External N/A
Shutoff
Voltage
- 0.2 V
3.8 V N/A
Time Since Last
Power Fail
20 minutes
1 hour
2 hours
4 hours
6 hours
12 hours
24 hours
Action
Aborts
boot-up
and
shuts
down.
A-5