Siemens TC35i - Manual (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