Larson Davis SoundAdvisor 831C Reference Manual page 167

A.1.4 SLM Performance Specifications
Table A.2 SLM Performance (Nominal Values)
0 dB
Gain
A
Measureme
C
1
nt Range
Z
A
Typical
C
1
Noise Floor
12.3
Z
≥120
A
20-140 12-120 24-140 20-120 24-140 20-120 20-140 14-120
≥121
Linearity
C
2
Range
19-140 10-120 25-140 23-120 25-140 23-120 20-140 14-120
≥117
Z
23-140 15-120 32-140 32-120 32-140 32-120 26-140 24-120
A 65-143 46-123 65-143 44-123 65-143 44-123 64-143 45-123 46-103
C 63-143 46-123 66-143 45-123 66-143 45-123 65-143 46-123 47-103
2
Peak Range
Z 64-143 46-123 68-143 59-123 68-143 59-123 66-143 48-123 49-103
≥140
2
SPL Max Level
≥143
Peak Max
2
Level
1. Microphone and electrical self-noise included
2. Electrical measurement, frequency 1kHz
A.1.5 User Interface Specifications
SoundAdvisor Model 831C
Direct Input PRM831 with
(dBµV) 377B02 (dB SPL)
+20 dB 0 dB
n/a n/a 24-140 20-120 24-140 20-120 21-140 16-120
n/a n/a 26-140 25-120 26-140 25-120 21-140 16-120 10-100
n/a n/a 36-140 33-120 36-140 33-120 27-140 25-120 19-100
8.3 -0.1 16.3
6.9 -1.4 16.8
3.0 23.4
≥108 ≥116
≥110 ≥114
≥104 ≥104
≥120 ≥140
≥123 ≥143
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
PRM831 with
377C20 (dB SPL)
+20 dB 0 dB +20 dB
15.6 16.3 15.6
16.3 16.8 16.3
23.2 23.4 23.2
≥100 ≥116 ≥100
≥96 ≥114 ≥96
≥87 ≥104 ≥87
≥120 ≥140 ≥120
≥123 ≥143 ≥123
PRM831 with
378A04 (dB SPL)
377A15 (dB SPL)
0 dB +20 dB 0 dB
6-100
12.5 12.0 5.4
12.5 12.0 10
16.5 15.5 18.4
≥120 ≥106 n/a
≥120 ≥106 n/a
≥114 ≥96 n/a
≥140 ≥120 ≥100
≥143 ≥123 ≥103
+20 dB
6-80
8-80
18-80
5.5
8.0
17.5
n/a
n/a
n/a
26-83
27-83
41-83
≥80
≥83
A-3