Nissei TX-27, TX-101A, TX-102, TX-402, TX-502 User Manual

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SWR WATT METER USER MANUAL/SWR WATT METER USER MANUAL/

TAIWAN NISSEI SOKKI CO LTD., .TAIWAN NISSEI SOKKI CO LTD., .

Model : TX-27, TX-101A, TX-102, TX-402, TX-502Model : TX-27, TX-101A, TX-102, TX-402, TX-502

Product Main FeatureProduct 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.

• 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.

• 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)

Specifications

MODEL

Frequency Range

Power Range

Power Scale

Maximum Power

Accuracy

Insertion Loss

Input/Output Connectors

Input power

Dimension W H D( //)

Weight (Net)

26 30 MHz-

1660MHz

(6m/HF)

.-

0 2KW-

20 200 2KW//

2KW

50 ohm

± 10% of Full Scale or better

1 6 525 MHz

(2 sensors,102,402)

.-

1 6 200 MHz.-

125 525 MHz
(70cm/UHF)

-

TX 502-TX 101A- TX 102- TX 402-

TX 27-

140 150 MHz(2m/VHF)

at-145 MHz

430 440 MHz(70cm/UHF)

at 435 MHz

-

Input/Output Impedance

Testing Function

Min. Power (Forward)

Center Calibrated

27 MHz

1.6 60 MHz(6m/HF)
at-28.5 MHz

140 150 MHz(2m/VHF)

at 145 MHz

-

28.5/145/435 MHz

28.5 MHz

2 20 200W//

200W

0 200W-

Less than 1.2 : 1

1W

Forward Power, Reversed Power, SWR, and PEP (TX-101A's active PEP)

M type

M type (N type optioned)

9-14 VDC 200 mA maximum

184(W) X118(H) X131(D) mm

840g 900g 910g 920g 1070g

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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.

Caution

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).

Forward /Reverse Pwr /SWR MeasurementForward /Reverse Pwr /SWR Measurement

<INSTALLATION>

MadeinTaiwan

A. Set the RANGE switch to the proper meter multiplier (X1, X10, X100) for the

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-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

TX-402,

Front PanelFront Panel

Rear PanelRear Panel

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.

<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

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