SoundAdvisor Model 831C
A-6
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
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
Table A.3 Low Power At Boot-Up
Power
Level
Power
Source Parameters
Icon
Action
Lo
w
External < External
Shutoff
Voltage
1
+ 0.8 V
Warning
Only
Internal
< 4.2 V
Ver
y L
ow
External < External
Shutoff
Voltage
+ 0.5 V
Halts
boot-up
process
2
Internal
< 4.1 V
Halts
boot-up
process
and
shuts
down.
De
ad
External < External
Shutoff
Voltage
- 0.2 V
N/A
Aborts
boot-up
and
shuts
down.
Internal
< 3.8 V
N/A
1. The External Shutoff Voltage is a user defined set
-
ting, see
9.4.6 "Setting the External Shutoff Volt
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
Table A.4 Power On After External Power
Fail Schedule
Powers On
Time Since Last
Power Fail
1st Attempt
20 minutes
2nd Attempt
1 hour
3rd Attempt
2 hours
4th Attempt
4 hours
5th Attempt
6 hours
6th Attempt
12 hours
7th - 16th Attempt
24 hours
Table A.3 Low Power At Boot-Up (Continued)
Power
Level
Power
Source Parameters
Icon
Action
