2
Configuration and Management
2.1
Connecting CFIP PhoeniX IDU to power source
In case AC/DC Power supply, 48VDC, 80W (EU - P/N I0AB4810, US – P/N I0AB4811, AUS -
I0AB4818) provided by SAF Tehnika JSC is used to power up CFIP PhoeniX IDU, interconnect IDU and
power source through appropriate connectors. Otherwise perform the following steps to ensure that
CFIP PhoeniX IDU is powered up correctly:
1.
It is necessary to interconnect CFIP PhoeniX IDU DC power connector (located on left side of
front panel) with power source. For this purpose power cable is required. Any 2 wire power cable
of good quality which fits well in SAF Tehnika’s supplied 2 pole “screw on” power connector
could be used. The power cable connector is 2 pole, type 2ESDV-02. This connector has screw
clamp terminals that accommodate 24 AWG to 12 AWG wire. The recommended wire size for
construction of power cables under 3 meters in length, supplying -48 V DC, is 18 AWG. The
opposite end of the power cable should have a termination appropriate for the power supply
being used. The power cable should be of sufficient length to avoid tension in the cable and
provide a service loop for connection, but not be of excessive length. Using the power cable
connector of type 2ESDV-02, pin 1 (labelled
‘-‘
) should be connected to the power supply
terminal supplying -48 V DC, while pin 2 (labelled
‘+’
) should be grounded. Refer to
Figure 2.1
.
2.
Connect the power cable to the -48 V DC power supply, and place the voltmeter probes at the
unconnected ends of the power cable, with the positive voltmeter probe on pin 1 (
’-’
) of the
cable connector and the negative probe on pin 2(
’+’
). The connector screw terminal screw heads
may be used as convenient monitor points. Refer to
Figure 2.1
.
3.
Turn on the –48 V DC supply. Verify that the digital voltmeter reads between -36 V DC and -57 V
DC when monitoring the cable points specified above. Adjust the power supply output voltage
and/or change the connections of the power supply to achieve this reading.
4.
With the negative voltmeter probe still on pin 2 (
’+’
) of the power cable connector (and the
power supply still on), put the positive voltmeter probe to the CFIP PhoeniX IDU chassis and
verify a potential of zero volts between the IDU chassis and cable pin 2 (
’+’
). If the measured
potential is not zero, the power supply may be grounded incorrectly and should not be used for
CFIP PhoeniX IDU powering. Note that this measurement assumes that CFIP PhoeniX IDU is
installed and properly grounded. If that is not the case, the same measurement can be made
between cable pin 2 (
’+’
) and a convenient ground (such as an ac outlet third-wire ground).
5.
Turn the -48 V DC supply off.
6.
Plug the power cable into CFIP PhoeniX IDU front panel DC Power connector (
DC Input
). Place
the voltmeter probes on the cable connector screw terminal screw heads as described in step 2
above. Refer to
Figure 2.1
. Note that CFIP PhoeniX IDU does not have a power on/off switch.
When DC power is connected, the digital radio powers up and is operational. There can be up to
500 mW of RF power present at the antenna port. The antenna should be directed safely when
power is applied.
7.
Turn on the -48 V DC power supply, and verify that the reading on the digital voltmeter is as
specified in step 3 above.
(!)
Note that pin 2 (‘
+’
) of the CFIP PhoeniX IDU DC Power connector (
Figure 2.1
) is connected
to the IDU chassis ground internal to the IDU. Use of a power supply with an inappropriate
ground reference may cause damage to CFIP PhoeniX IDU and/or the power supply.
CFIP PhoeniX Series TDM/IP Split Mount System Technical Description and Configuration Guide
•
Rev. 1.13
•
© SAF Tehnika JSC 2015
19
