Transceiver Supply Voltage Test; Vdc Communication Supply Voltage Test - ABB NGC8206 User Manual

6.6.3

Transceiver Supply Voltage Test

Using the wiring information and guidelines supplied by the transceiver
manufacturer, verify that the transceiver is receiving the manufacturer's suggested
voltage. If the unit is receiving sufficient voltage, continue to the optional
equipment enclosure wiring voltage test.
6.6.4

12 VDC Communication Supply Voltage Test

6.6.4.1
If the transceiver does not feature a sleep mode and power is supplied through an
optional relay, begin with step 1.
If the transceiver features a sleep mode, or is continuously powered, begin with
step 2.
1) If the transceiver does not feature a sleep mode and receives power
2) If the transceiver features a sleep mode or is continuously powered, using a
digital multimeter (DMM) set to volts DC, measure the voltage at each power
supply wiring junction. Verify the wiring is firmly connected and measure the
voltage between Power (+) and Ground (-).
2101510 Rev. AG
When the communication equipment is powered/switched
on, the NGC displays the communication icon after it
recognizes the NGC ID and is responding.
Check the baud rate of the NGC transmission and the listen
time settings. The baud rate and time settings can be
changed by entering the Station Setup screen from the
Analyzer Operation screen. Default settings are 1200 baud
and the listening time is four seconds with the
communications interface turned off.
The minimum power required for operating the remote
communications is 11.9 VDC (default) or as set by the user.
Should the power fall below this level, remote
communications will be terminated.
Test the remote communications using the RS-232
troubleshooting cable. Use the RS-232 to RS-485
communication converter in conjunction with the RS-232
troubleshooting cable to test the RS-485 remote
communications.
If the transceiver is not receiving sufficient voltage,
investigate the power supply issues. These may involve
wiring irregularities at the AC charger/power supply,
XFC/XRC board or at the power relay if using the relay for
switching power to the radio.
Instructions
through an optional relay, activate serial port 1 or 2 switched power out
(pin 3) and, using a digital multimeter (DMM) set to volts DC, measure the
voltage at the relay between relay coil terminals.
If the voltage reads the same as the supplied voltage (12 VDC) and the
transceiver is still not receiving power, the relay may be incorrectly wired
(use normally open contacts), or the relay may be bad.
If the relay is not receiving power, continue to step 2.
The voltage should be greater than or equal to 11.9 VDC for this unit. If the
voltage is less than 11.9, return to the test sequence outlined in the power
troubleshooting flowchart (see Figure 6-2).
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