supply of cb time interval meter (digital).cb time interval meter (digital).,cb time interval meter (digital).the instrument should be capable of measuring open, c lose & close-open timings of main contacts of all three poles simultaneously with end-to-end connections, display the timings of all three poles simultaneously on 4-line 20 character backlit lcd directly in millisecon ds, range of timing measurement should be from 1ms to 999 ms in several ranges, resolution of the timin g should be 1ms as per the selected range, measurement accuracy of value +/-0.05% + 1 digit. the instru ment should work on power supply of 230v ac+/-15% at 45-55hz and should have inbuilt rs 232c port for downloading data to a pc (with optional software).the instruments should be supplied with carrying case & . calibration certificate from nabl/any government-approved lab. after supply, demonstration shall be con ducted by firm at consignee location. [warranty period: 60 months after the date of delivery] [ warranty p eriod: 60 months after the date of delivery ] ]