MEDC Ex ResistTel - Manual (Page 29)

29
Technical data
Warning!
In order to maintain the explosion protection it is of paramount
importance to observe the information given in the chapter “Explosion
protection – characteristic data” on pages 14 and 15.
Note:
Except for ZB version for items marked with an asterisk *).
Connection data
Supply voltage
24 V
DC
to 66 V
DC
Supply current 15 mA
DC
to 100 mA
DC
Ringer voltage 24 V
AC
to 90 V
AC
(calling frequency 21...54 Hz)
30 V
AC
to 90 V
AC
(calling frequency 16.6...54 Hz)
Ringer impedance Greater than 6.0 k
Ω
at 25 Hz and 24...90 V
AC.
Greater than 4.0 k
Ω
at 50 Hz and 24...90 V
AC.
Consultation hold
key *) Flash function adjustable from 40 ms to 399 ms
via the menu.
Dialling method *) PD or DTMF mode can be set via the menu.
DTMF mode in accordance with ITU-T
recommendation Q.23.
Pulse Dial mode with pulse pause ratio 1.5:1 or
2:1 (adjustable via the menu).
Exchange number*) An exchange number and dialling pause are
programmable to between 1 s and 6 s via the
menu.
Bell-Shunt Possibility for connecting a second external ringer.
External speaker Terminals for the connection of an external
speaker (optional accessory).
Headset *) Terminals for the connection of a headset
(optional accessory).
Note: A headset or a second earpiece can be
connected, but not both simultaneously !
Second earpiece Terminals for the connection of a second earpiece
(optional accessory).
Note: A headset or a second earpiece can be
connected, but not both simultaneously !
Connection
terminals Up to 4 mm
2
inflexible.
Up to 2.5 mm
2
flexible.