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GV30N TROUBLESHOOTING MANUAL
RESPONDING TO ALARMS
PAGE 4.1.20
VERSION 0.1 2014-11-01
Exciter A/B: FPGA
Test Failed (FPGA Fail)
Exciter (red)
This alarm occurs if the FPGA on the main exciter card is not responding.
This alarm prevents the exciter from producing modulation or RF power, and
may be the result of a failed software upgrade or a hardware failure on the
exciter/control PWB.
Exciter A/B: High PA
Dissipation (High PA
Diss)
Power Amplifier
(amber)
This alarm occurs when there is excessive power dissipation (approximately
300 W) in the exciter’s power amplifier.
Exciter A/B: High PA
Temperature (High PA
Temp)
Power Amplifier (red) This alarm occurs if the heatsink temperature sensed within the exciter’s
power stage exceeds 85°C (185°F). This alarm will clear when the heatsink
temperature decreases to 75°C (167°F).
Exciter A/B: High SWR Exciter (amber)
This alarm occurs if the exciter is experiencing high reflected power (greater
than 17.5 W). Check the connection and the RF load at the exciter’s output.
Exciter A/B: Licensing
Error
Exciter (red)
This alarm should only occur if there is a fault with the memory on the
exciter. It indicates that the exciter has not been licensed for the current
mode of operation.
Exciter A/B: Low
Battery
Exciter (amber)
This alarm occurs if the backup battery voltage falls below 2.7 V. The
GV30N takes no action on this alarm. Use a digital multimeter to check the
battery voltage (with ac power on). If the battery voltage is low, replace the
battery. If the battery voltage is OK, cycle ac power (off, then on). If the
alarm does not clear, suspect the exciter/control PWB.
Exciter A/B: Missing
Preset
Exciter (red)
Visible only when replacing an exciter. This alarm occurs when there are no
presets programmed into the exciter. The transmitter should automatically
correct this.
Exciter A/B:
Modulation Loss
(Mod Loss)
Exciter (red)
This alarm, enabled by the user, indicates that the exciter’s audio
modulation level is below the level specified in the audio loss settings of the
active preset (see
of the Operations &
Maintenance Manual to enable/disable this alarm and to configure the
resulting action). Depending on the setting, this alarm could trigger a preset
change, inhibit the RF or have no effect (alarm only). Check the appropriate
program input(s) and the mod loss setting for the preset.
Exciter A/B: MPX
Audio Low (MPX Aud
Low)
Exciter (amber)
This alarm indicates the MPX input level is too low or is not applied. The
threshold and timing for this alarm can be adjusted in the Audio Low menu
in the user interface (see
“Setting Low Audio Thresholds” on
) of the Operations & Maintenance Manual .
Exciter A/B: No Active
10MHz (No Act
10MHz)
Exciter (red)
This alarms occurs if there is a fault with the current 10 MHz source being
used to clock the exciter. Check the external 10 MHz source or suspect the
oscillator on the exciter.
Device and
Alarm Name
(AUI, UI)
Controller Front
Panel LED (color)
Description and Troubleshooting Action
Содержание GV30N
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Страница 8: ...GV30N TROUBLESHOOTING MANUAL PAGE 4 VIII VERSION 0 1 2014 11 01...
Страница 92: ...GV30N TROUBLESHOOTING MANUAL PARTS LISTS PAGE 4 2 10 VERSION 0 1 2014 11 01...
Страница 318: ...VERSION 0 1 2014 11 01 SD 32 Figure SD 32 NAE107A or NAE107A 01 Exciter...
Страница 327: ...VERSION 0 1 2014 11 01 SD 41 Figure SD 41 NAFP109B Output Power Probe and Sample PWBs...
Страница 333: ...VERSION 0 1 2014 11 01 SD 47 Figure SD 47 UPS Interface Assembly Optional Nautel Part 219 5179 UPS Interface Upgrade Kit...
Страница 337: ...GV30N TROUBLESHOOTING MANUAL MECHANICAL DRAWINGS PAGE 4 5 4 VERSION 0 1 2014 11 01...
Страница 351: ...VERSION 0 1 2014 11 01 MD 14 Figure MD 14 NAPA31C Power Amplifier PWB Q1...
Страница 354: ...VERSION 0 1 2014 11 01 MD 17 Figure MD 17 NAI23A RF Drive Splitter Changeover Assembly FRONT BACK...
Страница 356: ...VERSION 0 1 2014 11 01 MD 19 Figure MD 19 NAL16 2 Input Reject Load Assembly TOP VIEW END VIEW 2 INPUT REJECT PWB A1...
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