Registered in England No. 08405712
VAT Registration No. GB163 04 0349
Siretta Ltd
Basingstoke Road
Spencers Wood
Reading
Berkshire RG7 1PW
sales
email
web
+44(0)118 976 9000
www.siretta.com
37
ZETA-xxP Series
Hardware Manual
rev
D
Power Supply Requirements
A DC power supply must be connected to the power input.
Table 15.
Characteristics of power input
The ZETA-xxP modem has a wide operating voltage and can be powered from 7V to
42V. Powering the modem can be done in 2 different ways:
»
Modem Power Supply - Standard multi region power supply provides constant
12V at 2A
»
Power Cable - Provide a power source between 7V to 42V from the supply of the
equipment connected
ZETA-xxP Series
DC input voltage
7 to 42V
Recommended input voltage
12V DC
Supply current @ 12V:
Peak (20ms at registration)
2A
Average standby
11mA
Call in progress
200mA
Ringing
210mA
NOTE -
The current requirements of the ZETA-xxP modem will scale with input voltage. The
higher the input voltage the lower the current consumption, the power consumption will remain
constant. Recommended input voltage is 12V.
The ZETA-xxP modem has the following input power supply protection:
»
On board voltage reverse polarity protection
»
Over voltage spike protection to 70V for 1mS.
»
ESD protection to +/-4KV contact discharge and +/-8KV air discharge.
