FMT- 25 VHF FM TRANSLATOR 862-09725
Issue 1A:
TX PLL LOCK (green led)
ON
RF FAULT (red led)
ON
VSWR FAULT (red led)
OFF
TEMP FAULT (red led)
OFF
TL ID (yellow Led)
OFF
AC SUPPLY (green led)
ON
EXT DC (green led)
ON
RX PLL LOCK (green led)
ON
MUTE (red led)
OFF
PROGRAM LOSS (red led)
OFF
PSU FAULT (red led)
OFF
c) ALC METER (not fitted on this unit).
d) MULTIMETER
Select the four functions in turn and check the meter readings:
•
FIELD
Indication of received RF level.
•
FORWARD POWER
0 Watts (no Leds on).
•
REFLECTED POWER
0 Watts (no Leds on).
•
BASEBAND
Indication of received RF level.
e)
SETTING THE RF POWER LEVEL
Select FWD POWER on the Multimeter and observe the reading.
Adjust the Front panel TX PWR ADJ potentiometer clockwise to set the RF output power to
25W. (This should be achieved with 16 Leds on).
Now check the PA CURRENT and REFL POWER readings:
PA CURRENT should be approximately 1.9 Amps.
REFL POWER should be less than 2.5W (16 Leds).
Check all the fault Leds on the front panel and ensure that there are no
red Leds
on .
The unit is now operational and only the final temperature must be monitored after
approximately 15 minutes. The temperature reading on the front panel Multimeter should
settle down to approximately 12
°
C above Room temperature.
MECHANICAL
The unit is designed to fit in a standard 19 inch rack, cabinet structure. There is a Slide rail kit
(option) available for this purpose which allows the unit to be installed in this manner.
Due to the weight of the unit it is not recommended to mount the unit without proper
support.
INTERCONNECTIONS
Summary of Contents for FMT-24
Page 1: ...FMT 25 VHF FM TRANSLATOR 862 09725 Issue 1A FMT 25 VHF FM TRANSLATOR TECHNICAL MANUAL ...
Page 7: ...FMT 25 VHF FM TRANSLATOR 862 09725 Issue 1A Figure 1 Front and Rear panel layout ...
Page 8: ...FMT 25 VHF FM TRANSLATOR 862 09725 Issue 1A Figure 2 Schematic Diagram of FMT 25 ...
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