RAJNI ELECTRONICS SERVICES

Digital SWR Meter, Model RES-100 is an improved version of earlier SWR Meters with analogue meter having multiple scales for reading signal level & SWR values. It is simpler to operate and gives accurate results.

RES-100 gives direct digital display of SWR readings in the range of 1.00 to 19.9, thus avoiding the need of expanded SWR scale and greatly simplifying the operation.

Gain control of 0-60db is provided through a 7-position band switch and an accurately calibrated gain control of 0-10db through a variable gain control potentiometer.

Designed primarily for use in making standing wave measurements in conjunction with suitable detector and slotted line or wave-guide section, it is a high gain tuned amplifier operating at a fixed frequency of 1 KHz.  It is calibrated to indicate SWR directly or signal level in db when used with square law detector devices like crystal diodes.

RES-100 operates in two modes – Normal & Audio. In Normal mode, it is used for measurement of db & SWR. In Audio mode, the detected voice signal from crystal detector is amplified and can be heard through a head-phone / speaker.

Output of SWR meter can also be recorded through BNC connector provided at the back of the panel.

Model   operates on 220VAC / 50Hz mains supply. Choose option 01 for operation of instrument on 110VAC / 60Hz

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• Input power supply                                        220VAC, +/- 10%, 50 Hz

          110VAC, +/- 10%, 60 Hz

          (for option 01)

• Input connector                                                               BNC (F)
• Input frequency                                                               1000 Hz
• Bandwidth (3db)                                           50 Hz
• Amplifier type                                                   High gain tuned at 1000 Hz
• Input selector                                                    a) Xtal High impedance (200KΩ)

          b) Xtal Low impedance (200Ω)

• Sensitivity                                                           0.1µV
• Range  

          70 db

          (60 db in 10 db steps, 10 db 

           through variable gain control)

• Accuracy                                                              +/- 0.2db per 10 db step
• Modes                                                                  a) Normal

          b) Audio

• SWR range                                                          1.00 to 19.9
• Display                                                                  3 ½ Digits Large LED Display for db & SWR
• Recorder output                                              Through BNC (F) connector
• Audio output

          Through built-in Speaker

          & audio Jack

• Mechanical dimensions                                 26(L) X 13(H) X 26.4 (D) cm3