Nortel Meridian M3900, Справочное руководство

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Environmental, power, and safety considerations 129
Meridian SL-100 M3900 Meridian Digital Telephones Reference Guide
Accessory environmental information
Meridian External Alerter and Recording Interface
Table 32 provides MEARI specification and environmental information.
Accessory Connection Module
Table 33 provides ACM specification and environmental information.
Table 32
MEARI specifications
Item Specification
Ring relay contact Normally open, max 50 mA 30 V.
Call status relay contact Normally open, max 50 mA 30 V.
Record audio level (RJ12 jack) Nominal - 12dBm, 600 Ohm.
Record audio level (3.5 mm jack) Nominal - 52 dBu, microphone level.
Operating temperature 0ºC to 50ºC.
Humidity 5% to 95% Relative Humidity.
Dimensions (H x W x D) 1.25 x 3.75 x 4.65 inches.
3.2 x 9.5 x 11.8 centimeters.
Weight 4 oz.
104g.
M3902, M3903, M3904, M3905 all equipped with
M3900 series ACM and power supply Compatible.
Table 33
Environmental information
Item Range
Operating temperature 0º to 50ºC (32º to 104ºF).
Operating relative humidity 5% to 95% (non-condescending). At
temperatures above 34ºC (93ºF) relative humidity
limited to 53 mbar of water vapor pressure.
Storage temperature -50º to 70ºC (-58º to 158ºF).
Storage relative humidity 5% to 95% (non-condescending). At
temperatures above 34ºC (93ºF) relative humidity
limited to 53 mbar of water vapor pressure.