SoundAdvisor Model 831C
A-5
NiMH Charge Time
: USB to power outlet (not PC),
meter powered OFF during charging 16 hours
Typical Operating Time
: 8 hours continuous
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
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
Data Storage
Internal
: 2 GB non-volatile flash memory
dedicated to data and user setups
External: Up to 32 gigabyte USB Flash Memory
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)
Table A.3 Low Power At oot 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
-
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
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 oot Up Continued
Power
Level
Power
Source Parameters
Icon
Action
