Soundadvisor Model 831C Base Software - Larson Davis SoundAdvisor 831C Reference Manual

Table A.3 Power On After External Power
Fail Schedule (Continued)
Powers On
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
Data Storage
Internal: 2 GB non-volatile flash memory
dedicated to data and user setups
External: Up to 32 gigabyte USB Flash Memory
Drive
A.3 SoundAdvisor Model 831C Base Software
Standards Met
Sound Level Standards:
• IEC 61672-1:2013 Class 1, Group X
• IEC 60651 Ed 1.2 (2001) plus Amendment 1
(1993-02) and Amendment 2 (2000-10) Type
1, Group X
• IEC 60804 (2000-10) Type 1, Group X
• ANSI S1.4-2014 Class 1
• ANSI S1.4-1983 (R2006) plus Amendment
ANSI S1.4A-1985 (R2006) Type 1
• ANSI S1.43-1997 (R2007) Type 1
• DIN 45657 Sound level meters - Additional
requirements for special measuring tasks
SoundAdvisor Model 831C
Time Since Last
Power Fail
12 hours
24 hours
Electrostatic Discharge
The instrument is not adversely affected by
electrostatic discharges.
Environmental Conditions
Operating Temperature: –30 to +50°C (–22 to
122°F)
Storage Environment: –30 to +60° C (–22 to
+158°F), less than 90% RH
Temperature Sensitivity: < 0.5 dB error, –10 to
+50°C (14 to 122°F) at 1kHz
Humidity Sensitivity: < ±0.5 dB error, 25% to 90%
relative humidity at 40°C (104°F) at 1kHz
Physical Characteristics
Dimensions:
• 290 x 71 x 41 mm (11.35") including
microphone and preamplifier
• 224 x 71 x 41 mm (8.80") instrument body
only
Weight:
• 531.6 g (18.8 oz) including batteries,
preamplifier and microphone
• 489.2 g (17.3 oz) including batteries
Correction Filters
• Frequency response correction filters are
available for sound field/microphone type
and for
accessories.
• Note: "RI" indicates "Random Incidence"
and "FF" indicates "Free-Field"
• For microphone 377B20: RI to FF
• For microphone 377B02: FF to RI
• For microphone 377B02 with EPS2106/8: FF
to RI, FF to FF, FF:90°
• For microphone 377B02 with EPS2116: FF
to RI, FF to FF, FF:90°
environmental protection
A-5