Help with HP 4951B protocol analyzer + 18179A

John: I own a 4952+18179, which is very similar. The manual might be available from www.yourmanualsoure.com I rented the manual for the 4952A from them for $25 for one week. Answers as follows: (a) I believe you can save the data to the tape drive. My version has the "02 option" which is a memory board which contains about 700k of RAM and 128k of battery-backed NVRAM. Your unit may or may not have that option. (b) My unit has a floppy drive, but I recall reading that the tape drive uses standard QIC tapes (don't recall the type, DC60 or DC100 I think). They should be available from various sources including eBay. (c) The vertical row of switches on the 18179 enables you to pass through or isolate various RS232 signals from the analyzer. The horizontal row of 25 switches and patch cable holes enable you to concoct various wiring schemes. (d) I believe that you can connect the video to any standard composite monitor and it will show whatever is on the internal screen.