20090803 TX系列 MANUAL.cdr
TAIWAN NISSEI SOKKI CO . , LTD .
SWR / WATT METER USER MANUAL
Model : TX-27, TX-101A, TX-102, TX-402, TX-502
Product Main Feature
This wattmeter series offer many innovative features typically not found at this price level
• DC Grounded Antenna connector prevents electrostatic buildup.
• True Directional Coupler for increased accuracy over frequency.
• Low Bias Schottky Diode Detectors for increased linearity.
• Precision, large (104mm) Cross Needle Meter simultaneously displays forward and reflected power with
SWR.
• Individual Meter Scales for each power range increase reading accuracy.
• Precision True Active PEP Circuit (TX-101A)
• LED backlighting provides smooth, even illumination.
• Three Color Scale for improved readability.
• Rugged metal cabinet with speckled black finish and designer style grey injection molded front panel
aesthetically complements modern transceivers.
• DC Power Cable Included.
Specifications
MODEL
Frequency Range
Center Calibrated
TX-27
TX-101A
TX-102
TX-402
26-30 MHz
1.6-60 MHz
(6m/HF)
1.6-200 MHz
125-525 MHz
(70cm/UHF)
27 MHz
28.5 MHz
140-150 MHz(2m/VHF)
1.6-60 MHz(6m/HF)
at 145 MHz
at 28.5 MHz
430
-440 MHz(70cm/UHF)
140-150 MHz(2m/VHF)
at 435 MHz
at 145 MHz
Power Range
0 - 2KW
0 - 200W
Power Scale
20/200/2KW
2/20/200W
2KW
200W
Maximum Power
Accuracy
1.6-525 MHz
(2 sensors,102,402)
28.5/145/435 MHz
± 10% of Full Scale or better
Insertion Loss
Less than 1.2 : 1
Min. Power (Forward)
1W
Testing Function
Forward Power, Reversed Power, SWR, and PEP (TX-101A's active PEP)
Input/Output Impedance
50 ohm
Input/Output Connectors
M type
M type (N type optioned)
Input power
9-14 VDC 200 mA maximum
Dimension (W/H/D)
184(W) X118(H) X131(D) mm
Weight (Net)
TX-502
840g
900g
910g
920g
1070g
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Front Panel
<DESCRIPTION>
1. Indicator Display : Indicates FWD/REV power in watts and VSWR ratio
2. HF/VUHF band switch (black, round push button) :
Select HF (out) or VUHF (depressed). Available on TX-502 only.
3. Range switch : Selects RF power range multiplier x 1, x 10, x 100
4. AVG/PEP switch : Select Average or SSB PEP
5. Indicator ON/OFF push button (elliptical) : LED backlight ON/OFF
6. Zero adjust screws of analog cross needle meter
Rear Panel
<DESCRIPTION>
7. TX connector : Coax connector to transmitter 50 ohm RF output
8. ANT connector : Coax connector to 50 ohm antenna system
9 & 10. 2nd pair of TX/ANT connector : Available on TX-502 only
11. 13.8V DC connection (via power supply) for meter LED illumination
Note : DC power is only required to run the meter backlight or active
circuitry in TX-101A. Except TX-101A, this meter will function
without DC power in the AVG mode, even when switch off.
Forward /Reverse Pwr /SWR Measurement
A. Set the RANGE switch to the proper meter multiplier (X1, X10, X100) for the
<INSTALLATION>
expected power level of the intended measurement.
B. In TX-27, TX-101A, it corrosponds to 20/200/2K watts forward and 5/50/500
watts reflected full scale (Fwd : Ref = 4 : 1) In TX-102, TX-402,TX-502, it
corrosponds to 2/20/200 watts forward and 0.5/5/50 watts reflected full scale
(Fwd : Ref = 4 : 1)
C. (Push or release) the HF/VUHF band push knob (black, round button) to the
frequency of the itended measurement (corresponds to TX-502 only).
D. Set the radio transceiver to transmit mode and read the scale corresponding
to the RANGE selected
E. When switch to 'AVG', the meter reads average RF power.When switch to 'PEP', the meter reads Peak Envelope
Power for use withSSB and AM transmissions. In this mode, there will be a slow rise and decay time.
F. Push LED ON/OFF button when LED light is needed (in TX-101A, it also activate PEP active mode).
Made in Taiwan
Caution
1. Since the meter movement is very sensitive, avoid excessive vibration or mechanical shock to the meter.
2. Watch the absolute maximum power could be applied to the meter by different models you bought.
3. The meter must never be reverse connected. Always observe the correct connections to transmitter and
antenna as indicated on the rear sockets.
4. Do not expose the meter to excessive temperatures, high humidity, or strong magnetic fields.
5. Contact your local dealer for service. Dealer information is in the back of user manual.
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