... acceptance, daily maintenance of digital networks, mainly performing channel test, alarm analysis, fault finding and signaling analysis. In addition ... converters with one-way and bi-directional bit error test function. These capabilities make it ideal for field use ... Batteries5×1.2V AA NiMH batteriesOperating/Storage Temperature0°C~50°C/-20~+70°CHumidity5%~95% non-condensingDimensions/Weight200×160 ...