E1 Tester, 2M Error rate tester 1. hand-held 2. LCD display 3. Data storage 4. PC supported E1 Tester, ... -held structure,solid design,especially suitable for the fieldwork-LCD display with backlight,menu operation-Powered by and integrated ... typeFramed/unframedFrame patternPCM30, PCM30CRC, PCM31, PCM31CRCTest patternRandom pseudocode: 2^15-1, 2^11-1Fixed code: 1111,0000, 1010Alarm indicator Signal ...