Phoenix Model 5575A T1 Micro BERT Tester w/ Model 5565AT DSO Drop/Insert

Phoenix Microsystems Model 5575A T1 Micro Bert Untested

Hewlett Packard HP 4935A Transmission Test Set

Phoenix Microsystems 5575A T1 Micro-BERT Bit Error Rate Tester

Phoenix Microsystems 5575A T1 Micro-Bert w/ 5564 T1 Channel Monitor

Phoenix Microsystems 5575A T1 Micro Bert

TTC Acterna T-BERD 107A Handheld T1 Tester

Phoenix Microsystems Model: 5575A T1 Micro Bert F-5575-001A-1111