Siemens TC35i User Manual download pdf (Page 29)

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

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 35 36 37

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Siemens TC35i User Manual Page 29