Siemens ET7 Series Especificações descarregar pdf (Página 60)

DSB75 Development Support Board Rev. B1 Hardware Description

Strictly confidential / Released

DSB75_hd_v08 Page 60 of 94 29.09.2005

3.14.2 Power Supply for DSB75 and GSM Module

The voltage provided by the 9V…15V PSU generates all supply voltages required for the

DSB75 and the connected GSM module when battery operation is disabled.

The output power of the laboratory PSU has to satisfy the SELV requirements in accordance

to EN 60950.

Table 24: Recommended specification of the laboratory PSU

Value Parameters

Min. Typical Max.

Unit

Output voltage 8.5 12 15.5 V

Output current 1.5 A

Table 25: Connecting the laboratory PSU to X400 and X401

Voltage Connector Color

Supply voltage +9V…+15V 4 mm PCB jack Red (X400)

Ground 4 mm PCB jack Black (X401)

If no battery is present and the GSM module is powered from the laboratory PSU be sure

that the S601 toggle switch is in down position.

The green LED (V431) on the DSB75 is driven by 3V0 voltage and indicates that the DSB75

is supplied with power and switched on. See also 4.3.

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Siemens ET7 Series Especificações Página 60