Minimate Pro Operator Manual 7–9
15. The worst-case environmental change would be from -40 C (-40 F) – +50 C (122 F), or vice
versa. This is a 90 C (32 F) change. Recommended time to acclimatize the microphone to this
temperature range is 2 hours.
16. There is no correlation between electromagnetic emissions and operation of the Sound Level
Microphone, in any mode.
17. For the Sound Level Microphone, the least immunity to EMI would occur at the lowest input
signal level, at any frequency, since the imposed electrical signals would be large compared to
any desired input signal. To minimize induced noise, the cable between the microphone and
the Monitor Unit should be parallel to any electrical field.
18. The Minimate Pro4 and Minimate Pro6 monitors use rechargeable lithium-Ion batteries.
These batteries are not serviceable unless returned to the factory or to an authorized Instantel
Calibration Site. There is no internal access to the batteries that provides for user maintenance
without disassembly of the monitor and breach of warranty.
a. Nominal battery life after full charge is 10 days.
b. The AC charger supplied with the monitoring system is12V 1A. The current limit is
confirmed by design analysis and product tests.
c. The range of DC output voltages from the AC adapter for which correct operation is
guaranteed is 8V – 16V.
d. Sound Level Microphone may be operated indefinitely if plugged into an AC source
as part of the monitoring system. However, the AC power supply is specified for
operation in protected environments only. For extended operation outside, the AC
charger may be replaced by a solar cell (supplied by the customer) or marine battery.
e. There are no customer-accessible electrical outputs in the system.
f. The only component of the product that must be operated in an environmentally
controlled enclosure is the AC adapter for charging the batteries.
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General