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Electrical and environmental characteristics, 5 electrical and environmental characteristics, Confidential / released – Siemens TC35i User Manual

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TC35i Terminal Hardware Interface Description

Confidential / Released


TC35i_T_HD_v01.05 Page

29/37

10.07.2003

5 Electrical and environmental characteristics

Table 9: Absolute maximum ratings

Parameter

Port / Description

Min.

Max.

Unit

Supply voltage

PLUS

-50

30

V

Overvoltage

PLUS / for 1h

33

V

Input voltage for on/off
Control lines

/IGT_IN, /PD_IN

-5

30

V

/TXD, /DTR, /RTS

-30

+30

V

RS-232 input voltage range

/RXD, /CTS, /DSR, /DCD, /RING

-0.3

+5.3

V

Microphone input line
voltage

MICP, MICN

-0.3

+10

V

Earpiece input voltage

EPP, EPN

-0.3

+3.3

V

Immunity against discharge
of static electricity

all connectors (lines)

-8

+8

kV

Protection Class

IP40

(avoid exposing TC35i Terminal to

liquid or moisture, for example do not use it
in a shower or bath)

IP 40

Mechanical vibrations
amplitude

@ 5-200Hz

7.5

mm

Mechanical pulse-
acceleration

@ 18 ms duration

30

g

Table 10: Operating conditions

Parameter

Min

Typ

Max

Unit

Ambient temperature

-20

25

55

°C

Supply voltage PLUS
measured at (6-pole)
western jack plug (1 to 6)

7.6 lowest voltage
(minimum peak) incl. all
ripple and drops

12

30

V