Measuring instrument of subscriber lines option SHAFT reflectometer, bridge
Implementation of two methods of measurement in one device allows to define more precisely and more correctly distance to the place of damage.
determination of nature of damage;
- stay and exact range sensing to the place of damage or heterogeneity of the line
- comparison of reflectograms of different lines (modes: line memory, memory memory);
- mode two screens;
- digital filtering of reflectograms;
- measurement of coefficient of shortening of the line with its known length;
- measurement of length of cables;
- measurement of insulation resistance, loop, ohmic asymmetry, line capacitances.
- measurement range (at To shortening 1,5)-0,025 … 64 km
- resolving ability - 0,12 m
- outgoing resistance - 50 … 250 Ohms
- pulse width, nanosecond 20 … 25000
- range of gain, dB 74
- range of measurement of loop resistance from 0,1 Ohms to 10 kOhm; loop resistance measurement error: 0,1%+0,1 Ohm
- range of measurement of an ohmic asymmetry from 0,1 to 100 Ohms; measurement error of an ohmic asymmetry: 0,1% +0,1 Ohms
- range of measurement of line capacitance from 1 nf to 2 microfarad; capacity measurement error: 2%;
- insulation resistance iziyereniye range from 1 kOhm to 50 GOM; insulation resistance measurement error: 2%
- measurement of distance to the place of damage (isolation lowering); a range sensing error to an insulation failure mesi (for Rp of =0-3 megohms): 0,1%+1 m;
- function of the voltmeter of a constant and alternating voltage (from 0 to 300 V)
- function of the generator (to the line the sine signal with a frequency of 1000 Hz is given)
- test voltage at measurement of insulation resistance: 180 і 400 Century.
The device allows to save the received parameters in memory of the device and to transfer them to the computer (interfeysusb);
In the device functions of measurement of level of a charge of accumulators and autopower off are implemented.
The modes of measurement and the received parameters are displayed in a graphic and alphanumeric view on the LCD indicator (320*240) with illumination.
Device weight with accumulators no more than 1.1 kg
Overall dimensions of 260*15*62 mm
By request the inductive probe is included in the package of delivery, it is intended for check of operability of a cable and identification of couples or lived in the contactless way.