Larson Davis SoundAdvisor 831C Reference Manual page 162

SLM Performance
PRM831 with
Microphone (dB)
Gain 0 dB
24-140
A
Measurement
26-140
C
1
Range
36-140
Z
16.3
A
Typical Noise
16.8
C
1
Floor
23.4
Z
≥117
A
23-140
≥114
Linearity
C
2
Range
25-140
≥104
Z
36-140
65-143
A
66-143
2
C
Peak Range
68-143
Z
≥140
2
SPL Max Level
≥143
2
Peak Max Level
1. Microphone and electrical self-noise included
2. Electrical measurement, frequency 1k Hz
User Interface
Keyboard: 13 keys, quiet elastomer touch with
blue back-lighting for measurement control and
data navigation
Status Indicators:
• Red LED under the STOP/STORE key
indicates measurement stopped
• Green LED under the RUN/PAUSE key
indicates measurement running
• Green LED under the power key indicates
battery charge and power on/off in
progress
Display:
• TFT full color LCD, 240 by 320 dot matrix
SoundAdvisor Model 831C
Direct Input
377B02
(dBµV)
+20 dB 0 dB
20-120 n/a
25-120 n/a
33-120 n/a
15.6 8.3
16.3 6.9
23.2 12.3
≥102 ≥120
18-120 20-140
≥96 ≥121
24-120 19-140
≥87 ≥117
33-120 23-140
44-123 65-143
45-123 63-143
59-123 64-143
≥120 ≥140
≥123 ≥143
• White backlight with adjustable brightness
and on–time
• Touch screen to assist in data navigation
and measurement control
• Multiple color themes for various lighting
+20 dB
conditions
Display update rate: ≤ 1 s
n/a
Lock: User interface may be locked and unlocked
Languages: Czech, English, French, German,
n/a
Italian, Norwegian, Portuguese, Russian, Spanish,
Swedish, Turkish
n/a
Input
-0.1
Connector: Latching 5-pin circular connector,
mates to PRM831 or EXCxxx cables
-1.4
Preamplifier Supply: 36 volt at 5mA available to
power preamplifier
3.0
Input Impedance: ≥ 100kΩ || 300 pF
Direct Input: Absolute maximum of ±35 V, DC bias
≥108
readout 0 to +35 V
12-120
Gain Control: Selectable 0 or +20 dB gain
≥110
Full Scale Input 0 dB Gain: ±14.14 Vpeak AC
Full Scale Input +20 dB Gain: ±1.414 Vpeak AC
10-120
ICP Input (use ADP074): Constant current of 4
≥104
mA, maximum voltage of 28 V
Sample Rate: 51,200 sps
15-120
USB Client Interface
46-123
Type: USB 2.0 High–Speed Mini–B connector
Power Draw: ≤ 500mA from PC, USB Hub, or
46-123
PSA029
46-123
Supported Hosts:
• Computer with SLM Utility-G4
≥120
• Ethernet Dock 831INT-ET
• NoiseTutor
≥123
• Computer with custom software using
SWW-G4-SDK or SWW-G4-WIN
USB Host Interface
Type: USB 2.0 High-Speed, standard A connector
Supported Devices:
• USB Flash Memory Drive, up to 32GB FAT-32
Format, PN 831-M
• Ethernet
DVX012
• Ethernet Adapter & USB Hub, 1G/100M/
10M, PN DVX013
• WiFi Wireless Adapter, Edimax EW-7811Un,
or D-Link DWA-121, PN DVX014
• GPS Receiver HOLUX M-215, PN GPS001
• Multi–Metric
WXT520, PN SEN031
• Ultrasonic Wind Sensor, Vaisala WMT52, PN
SEN032
Adapter, 1G/100M/10M,
Weather Sensor,
PN
Vaisala
A-2