Go to Contents Precise Time and Frequency, Inc., 50L Audubon Road, Wakefield, MA 01880, USA ptf 3207A rev G
Tel: +1-781-245-9090 e-mail: info@ptfinc.com www.ptfinc.com pg. 19
Connecting the Power Supply
Warning: Ensure that a disconnect device, such as a switch, with the appropriate voltage/
current rating is provided when operating/installing the ptf 3207A.
Connect the Power Supply to a power source. The green POWER LED indicates that the ptf 3207A is
receiving power.
Notes for optional DC power supplies:
• Use a 15 amp circuit breaker in series with the DC power source; avoid connecting directly to a
DC power source without the breaker.
• 14 gage wire is the minimum recommended for DC power source hookup.
• DC Power Supply Only to be used in a restricted access area.
• The screw torque range on the Power Terminal Block is 5 to 8 inch pounds.
• When connecting to a DC power source, first connect the positive power cable to “+” on the
power supply, then connect the negative power supply cable to “-”.
Upon receiving power, the ptf 3207A goes through its startup sequence;
Fault LED flashes GREEN rapidly while the operating system is booting.
After approximately 30 seconds, the ptf 3207A display will indicate it is doing self tests
After successful completion of self tests the display will indicate "Ready"
Next, the display will show the initial menu of status screens
Finally, if no key is pressed on the keypad, the last selected status screen will display.
Before using the ptf 3207A for the first time it may be necessary to set up certain parameters such as
Ethernet settings, time displays, etc. This is done by use of the menu system, accessible through either
the front panel keypad, serial, telnet, or web browser capabilities. Please see the next section.
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