FEATURES
1) BALANCED AND UNBALANCED CABLE MEASUREMENT
2) SUITABLE FOR ATTENUATION AND CROSS TALK MEASUREMENT OF HIGH CAPACITANCE BALANCED /UNBALANCED CABLES
3) FIVE BAND CONTINUOUSLY VARIABLE TEST FREQUENCY 800Hz TO 2.0MHz.
4) COARSE AND FINE CONT. VAR. TEST FREQUENCY CONTROL

5) FOUR DIGIT DIGITAL FREQUENCY METER
6) MOVING COIL DUAL SCALE dB METER FOR OUTPUT AND INPUT READING. VALUE
7) OVER RANGE PROTECTION OF METER
8) MANUAL ZERO CONTROL
9) THREE RANGE MEASUREMENT FOR LOW AND MED. FRQ.
10) TWO RANGE MEASUREMENT FOR HI. AND RF. FRQ.
11) PHASE LOCK FILTER FOR STABLE MEASUREMENTS.
12) RESOLUTION 0.5 dB RANGE
13) BUILT-IN CALIBRATION FACILITY
14) HIGH POWER OUTPUT LOW DISTORTION SINE WAVE TEST SIGNAL
15) VERY LOW INPUT NOISE LEVEL
16) HIGH POWER OUTPUT FOR FASTER SETTING WHILE MEASURING HIGH CAPACITANCE CABLES
17) PROVEN DESIGN IN OPERATION FROM OVER 20 YEARS

INTRODUCTION
HIGH FREQUENCY ATTENUATION & CROSS TALK TEST SET COMPRISES OF :
A) SINE WAVE TEST FREQUENCY SIGNAL GENERATOR WITH FOUR DIGIT DIGITAL FRQ. METER.
B) DB METER WITH DUAL SCALE MOVING COIL ANALOUGE .METER
THE USE OF COMPUTERS AND OTHER SENSITIVE ELECTRONIC EQUIPMENT’S IN PROCESS INSTRUMENTATION SYSTEM HAS DEMANDED THAT MORE ATTENTION BE GIVEN TO CHARACTERISTIC IMPEDANCE MATCHING TO ELECTRICAL AND ELECTRONIC CONTROL INSTRUMENTS CIRCUITS FOR LOW NOISE SIGNAL AND LOW LOSS SIGNAL TRANSMISSION.
DUE TO MISMATCH IN IMPEDANCE CABLES PRODUCE NOISE AFFECTING PROCESS INSTRUMENT CIRCUITS, AND POWER LOSS REFLECTED TOWARD THE SIGNAL SOURCE AFFECTING SOURCE’S PERFORMANCE.
NOISE BY CONTROL LINES ARE CAPACITIVELY COUPLED TO THE WIRES IN INSTRUMENT CIRCUIT, THE COUPLING TO EXTERNAL VOLTAGE SOURCES RESULTS IN ABNORMAL BEHAVIOR OF CONTROL CIRCUIT .
THE BILLIONIX SOLID STATE HIGH FREQUENCY CROSS TALK & ATTRNUATION TEST SET IS RUGGEDLY BUILT PRECISION MEASURING INSTRUMENT FOR MEASURING CROSS TALK AND ATTENUATION IN CABLES FROM .5dB TO -100Db.THE INSTRUMENT IS SIMPLE TO OPERATE AND GIVES DIRECT dB LOSS IN ATTENUATION & CROSS TALK READINGS.

TESTING PROCEDURE
CONNECT THE CROSS TALK &ATTENUATION TEST SET POWER CORD TO 230V A.C.
CHECK THE GROUND TERMINAL ( test mandrel ground if any and utility power ground ).
TURN UNIT ON-OFF SWITCH TO ON .
WAIT FOR 20 MIN. WARM UP TIME.
PREPARE THE UNIT FOR MEASUREMENTS AS FOLLOWS.
SET THE CORRECT VALUE OF TEST FREQUECY BY BAND SELECTOR SWITCH AND THREE CONTORLS PROVIDED.
SET THE DB METRE SWITCH TO OUTPUT POSITION SET OUTPUT POWER BY ADJ. OUTPUT CONTROL TO O DB..
CONNECT THE TEST PAIR TO THE INPUT OF CROSS TALK & ATTENUTION TEST SET BNC CONNECTORS IN CASE OF BALANCED CABLE AND ‘N’ CONNECTOR FOR UNBALANCED CABLE.
WITH SHIELD AND OTHER PAIRS OF CABLE CONNECTION OPEN FROM BOTH ENDS AND THE TEST PAIR OTHER END OPEN CIRCUIT SET THE TEST RANGE TO THE DESIRED POSITION WITH THE KNOB PROVIDED FOR THE PURPOSE .
THE 3½ Digit Digital Impedance Meter. SHOWS THE READING THAT IS Zoc.
NOW SHORT CIRCUIT THE OTHER END OF TEST PAIR SET THE TEST RANGE, Impedance Meter. SHOWS THE READING THAT IS Zcc.
THE CHRACTRISTIC IMPEDANCE OF THE TEST CAN BE DETERMINED BY THE FORMULA Zch= Sqr (Zoc x Zcc).

TECHNICAL SPECIFICATION
HIGH FREQUENCY CROSS TALK &ATTENUATION TEST SET
TEST MODE :- MANUAL
Min. WARM UP TIME :- 20 Min.
DISPLAY. 1 :- 75mmx75mm dual scale analogue dB Meter.
ACCURACY :- ±3% t.
DISPLAY .2 :- 4 Digit Digital Frq. Meter.
ACCURACY :- ± 0. 1% ±1 digit.
TEST FREQUENCY :- 800Hz to 2.0100Mhz in five test FR. Band.
TEST FR. STABILITY :- ±1.5% ON LOAD
ACCURACY :- ± 0. 1% ±1 digit.
TEST SIGNAL :-UNBALANCED(low distortion Sine wave)
Measurement RANGES
Low &Med FR :-1) 199.0 ohms 2) 1.999 k ohms 3)19.99k ohms
Hi & RF FR :-1) 199.0 ohms 2)1.999 k ohms 3) 9.99k ohms
MIN. RESULUTION :- 0.5dB.
INPUT SUPPLY :- 230V ± 10 % A.C. 50 Hz.
INPUT POWER :- 150 Watts Max.
DIMENSIONS :- 465 (W) x 425 (D) x 300..(H) mm.
WEIGHT :- 7.5 Kg Approx.
Storage Temperature :- - 10° C TO + 55 ° C
Relative Humidity :- 0 TO 50 %