Spartan 821/721 Manual
Instrument Hardware Specifications
A-16
A.1.13 Instrument Date and Time Specifications
A.1.14 Data Storage Specifications
A.1.15 Electrostatic Discharge Specifications
This instrument is not adversely affected by electrostatic discharge under normal operating
conditions and within normal human static discharge limits of IEC61000-4-2:2008, ± 4kV
contact discharges and ± 8 kV air discharges. Care must be taken when replacing the
microphone and preamp, as well as when replacing the microSD card. See
the Preamplifier and Microphone
5.4 Troubleshooting File Storage
A.1.16 Environmental Conditions Specifications
A.1.17 Mechanical Vibration Effects Recommendations
Mechanical vibration can affect indicated levels at the lower boundary of the measurement
range at frequencies within the range of the sound level meter. In order to minimize the
Drift
Less than 0.5 seconds per 24 hours, -20
°
C to 50
°
C (-4
°
F to 122
°
F)
Format
ISO8601; hh:mm:ss yyyy-mm-dd; Meter Display also uses dd/mm hh::mm::ss
Type
Removable MicroSD card
Card Size
Up to 256 GB with no limit to the number of files or settings
Data Stored
Measurement data and settings
Operating Temperature-
External Power
1
1. When the unit is run for long periods outside of the storage temperature and humidity, the internal battery
capacity decreases.
–30° to 60° C (–22° F to 140° F)
Operating Temperature-
Internal Batteries
Discharge: –20° C to 60° C (–4° F to 140° F)
Charge: 0° C to 40° C (–32° F to 104° F)
Storage Environment
–30° C to +60° C (–22° F to 140° F) with < 90% humidity
Display Operating
Temperature
2
2. The display stops functioning when used outside of the Display Operating temperatures. But it recovers when
brought back within the noted temperature range.
3. The sound level meter may be used at static pressures down to 65 kPa. Be sure to perform an acoustic calibration
before use in these scenarios where the static pressure is less than 85 kPa.
Operating: –20° C to +70° C (–4° F to 158° F)
Storage: –30° C to +80° C (–22° F to 176° F)
