Rev. 1.0
FMX30/FMX100/FMX250 User’s Manual
3—8
These steps summarize the operating procedures you should use for the initial
operation of the transmitter
3.4.1
Apply Power
1. Turn on the DC breaker.
2. Turn on the main power switch.
3. Verify the following:
a.
The bottom cooling fan runs continuously.
b. The indicator ring flashes orange for approximately 10 seconds, then goes
dark.
3.4.2
Enter Initial Settings
1. Choose [Setting] then [Primary] then [Tx freq] to set transmitting frequency.
Choose [back] when finished.
2. Choose [Stereo] and set to ON.
3. Choose [Tx] and set to ON. Choose [Back] when finished.
3.4.3
Transmit
1. Turn on the Carrier switch
2. Check the following parameters from the [Readings] [primary] list.
RF Power : RF Power varies by model:
29–33 watts for the FMX30
95–110 watts for the FMX100
250-275 watts for the FMX250
SWR : Standing wave ratio should be less than 1.1. A reading greater than 1.25
indicates an antenna mismatch.
ALC : Automatic level control should be between 4.00 and 6.00 volts.
PA DC V : PA DC Volts varies by model,
antenna match, power, and frequency
.
Typical readings are:
26–30 volts for the FMX30
25–35 volts for the FMX100
37-52 volts for the FMX250
PA DCI : PA DC Amperes varies with model, antenna match, power, and frequency.
Typical readings are:
1.5–2.5 amps for the FMX30
3.04.5–6.5 amps for the FMX100
6.0–8.0 amps for the FMX250
PA Temp : PA Temperature should initially read 20–35 degrees C (room
temperature). After one hour the reading should be 35–50 degrees C. Maximum
operating temperature is 55 degrees C.