Battery Specifications; External Power Specifications; External Dc Power Supply Specs - Larson Davis SoundAdvisor 831C Reference Manual

A.1.13 Battery Specifications
Size: 4 x AA size cells (LR6)
Types: 1.5 V Alkaline, 1.2 V NiMH rechargeable, 1.5 V
Photo–Lithium
NiMH Charge Time: USB to power outlet (not PC),
meter powered OFF during charging < 16 hours
Typical Operating Time: > 8 hours continuous
measurement
A.1.14 External Power Specifications
Via USB Client Connector: Powered by computer or
PSA029 Power Adapter, 5.0 ±0.5 V typical, 16 V absolute
maximum
A.1.15 External DC Power Supply Specs
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 Requirement: 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
DVX012 Ethernet Adaptor: +1.8 W
DVX014 WiFi Adapter: +0.7 W
Table A.3 Low Power At Boot-Up
Power Power
Parameters
Level Source
External < External
Shutoff
Voltage
+ 0.8 V
Internal < 4.2 V
SoundAdvisor Model 831C
Icon Action
Warning
Only
1
Table A.3 Low Power At Boot-Up (Continued)
Power Power
Parameters
Level Source
External < External
Shutoff
Voltage
+ 0.5 V
Internal < 4.1 V
External < External
Shutoff
Voltage
- 0.2 V
Internal < 3.8 V
1. The External Shutoff Voltage is a user defined set-
ting, see 9.4.6 "Setting the External Shutoff Volt-
age" on page 9-6.
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 External 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 per 24 hour period over full operating
temperature range, battery back-up powered
Backup Time 1 year rechargeable battery backup
Icon Action
Halts
boot-up
2
process
Halts
boot-up
process
and
shuts
down.
N/A Aborts
boot-up
and
shuts
down.
N/A
Time Since Last
Power Fail
20 minutes
1 hour
2 hours
4 hours
6 hours
12 hours
24 hours
A-6