XIEGU XPA125B User manual

XIEGU
100 W Solid-State Linear Power Amplifier
XPA125B
Instruction Manual
Copyright © 2010~2017 Xiegu Communications
This device complies with Part 15 of the FCC Rules.Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause
undesired operation.
FCC ID: 2ANLH-XPA125B

XIEGU COMMUNICATIONS
1 XPA125B Specifications
1.1 Amplifier:
Frequency range: 1.0 – 55 MHz
Maximum output power: 1.8 - 30MHz ≥110W
50 - 54MHz ≥90W
Maximum operating ambient temperature: 55℃
Gain: 13dB (±2dB)
Supply voltage: 12 - 14.5 V DC
Current draw @ maximum output:
Standby: 260 mA @Max
Transmit: 30A @Max
1.2 ATU:
Tuning frequency range: 1.8 – 30 MHz/50 – 54 MHz
Maximum tuning range: 14 - 500Ω
1.3 Product specifications：
Dimensions: 260 x 150 x 100 mm (not including control knobs, feet, handles, etc.)
Weight：2.66 Kg(host only)
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2 Equipment description
2.1 Front panel layout:
① Power key
When XPA125B is turned on, press this button and hold for 2 seconds,
XPA125B will shut down.
When XPA125B is turned off, press this button and hold for 2 seconds,
XPA125B will turn on.
② ATU function key
Via this button you can access the automatic antenna tuning function.
③ BAND selection key
Using this button you can select between manual band switching or
automatic band switching.
In manual band switching mode, the XPA125B will change bands in the
following order:
160m→80m→60m→40m→30m→20m→17m→15m→12m→10m→6m
④ PA key
Used to switch the power amplifier into or out of circuit.
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⑤ LCD
All working status information is displayed here. The display is covered by an
organic glass protective plate.
2.2 Rear panel layout:
6
DC IN
Power supply socket:
The XPA125B requires a 12 - 14.5 V DC supply
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ANT
Connector:
The ANT socket is connected to the antenna, the connector model is SL16-K.
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FUSE
Holder:
Internal fuse holder. Fuse rating is DC 30A.
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10
Ground
ACC socket:
The data interface connections are as follows:
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PIN1：NC
PIN2
：
PTT Signal input
PIN4： ALC input
PIN5
：
NC
PIN3：Band voltage input PIN6： GND
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TRX Socket:
The TRX interface is connected to the transceiver output, the connector
model is SL16-K.
12
Comm interface:
This interface is for XPA125B firmware updates and connection to a PC.
2.3 Display interface layout:
⑴
Input SWR value:
Displays the SWR value of the XPA125B input.
⑵ Operating voltage:
Displays the value of DC voltage supply to the XPA125B.
⑶ Operating current value:
Displays the current being drawn by the XPA125B.
⑷ Output stage temperature:
Displays the current temperature of the PA stage.
⑸ Output SWR value:
Displays the SWR value of the XPA125B output.
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⑹
Power amplifier status:
Displays the overall status of the power amplifier as a whole.
Indicates that bypass mode is selected, the power amplifier is switched out of
circuit.
Indicates that the power amplifier is operational.
RX Indicates that the unit is in receive mode.
TX Indicates that the unit is in the transmit mode.
⑺
Input power value:
Displays the power input value to the XPA125B in Watts.
⑻ Current working band status:
Displays the current working band, and whether automatic or manual mode
is selected.
(9) Output power value:
Displays the output power being delivered by the XPA125B in Watts.
Automatic antenna tuner unit (ATU) status:
(10)
Displays the status of the automatic antenna tuner.
Indicates that the XPA125B is not connected to the automatic antenna tuner
unit.
Indicates that the XPA125B is connected to the automatic antenna tuner unit.
When tuning is successful,【INUSE】will be displayed.
If tuning fails,【Fail】will be displayed.
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3. Operating instructions
3.1 Wiring connection method
3.1.1 Method for connecting XPA125B with X108G
The XPA125B can be directly connected to an X108G, which can then control
the band switching and ALC functions of the amplifier.
-
The ACC data cable supplied with the XPA125B is connected between
the ACC ports of the two units. Both connectors are the same so
either end of the cable can be connected to either socket.
Use suitable RF coaxial cable to connect the X108G ANT port to the
XPA125B TRX port.
-
-
XPA125B ANTportshould beconnected to theantenna.
3.1.2 Method for connecting XPA125B with X5105
Use the dedicated connection cable CN-115 to connect the X5105 ACC port with
the XPA125B ACC port. Please note the need to distinguish between the different
plugs of the connection cable CN-115.
3.1.3 Method for connecting XPA125B with X1M
As the X1M does not have a dedicated ACC interface and PTT signal output, it
can’t be directly connected to the XPA125B. A CN-17 converter is required to
connect an X1M to the XPA125B.
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3.1.4 Connection method between XPA125B and other QRP radio
If you want to start the XPA125B power amplifier and put it into the transmit
mode, you need to set the PTT port to a low level [level≤0.1V].
If the PTT output signal of the transceiver is at high level, the high level
needs to be converted into a low level, and then input to the XPA125B
[ACC-PTT] port.
Pin 2 of the XPA125B ACC port is the PTT input port
In order to achieve automatic band switching, the corresponding band voltage
is needed. XPA125B band control voltage information is as follows.
BAND
LEVEL(mV)
230
460
690
920
BAND
LEVEL(mV)
1380
1610
1840
2070
BAND
50.0 MHz
----
----
----
LEVEL(mV)
2530
----
----
----
1.8 MHz
3.8 MHz
5.0 MHz
7.0 MHz
10.0 MHz
14.0 MHz
18.0 MHz
21.0 MHz
24.0 MHz
28.0 MHz
1150
2300
----
----
3.2 Procedure:
3.2.1 Using the power amplifier unit [PA unit] (ATU unit is set to BYPS)
-
-
PressthePAkey,sothatthestateoftheamplifieris[INUSE].
If your connected transceiver is an X108G or X5105, please set
the output power to 5 W.
If you are using any other QRP transceiver, please set the output
power to 1 W.
Set your transceiver to CW mode, press the CW key to
transmit, andtheXPA125B amplifier will be activated.
Theoutput powerofthe XPA125B canbe adjustedby adjusting
theoutputpowerofthe connected transceiver.
-
-
-
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Warning:
1. Do not allow the maximum output power of the amplifier to exceed 120 W.
2. Using the XPA125B at high power levels for extended periods can lead to
overheating and potential damage to the PA stage.
3.2.2 Band switching
-
-
-
Youcanswitchbetweenthetwomodesof[AUTO-MANUAL]
via this key.
If you want to connect the XPA125B to an X108G or X5105,
please setXPA125B to[AUTO]mode.
If you want to connect the XPA125B to other devices,
please set XPA125B to [MANUAL] mode and manually
switch to the desired frequency band.
Manual switching of frequency bands follows this order：
160m→80m→60m→40m→30m→20m→17m→15m→12m→10m→6m
3.2.3 Using the automatic antenna tuner unit [ATU] (PA unit is set to BYPS
state).
-
Pressthe [ATU]buttonso thatthecurrentstateof theamplifier
is [INUSE].
SetthetransceivermodetoCW& settheoutputpowerto5 W.
-
-
Press the CW key to transmit, and the
XPA125B PA
amplifier
stage will be activated. The XPA125B ATU unit will start, the
screen will display [TUNE].
-
-
Iftuningissuccessful,thescreenwilldisplay[INUSE].
If tuningfails,thescreenwilldisplay[Fail].
If you need to re-tune, you can press the [ATU] button for two seconds to
force the XPA125B ATU unit to start re-tuning.
After successful tuning, switch the transceiver to the desired state for use.
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