Tektronix 2465B oscilloscope teardown

[JSC]

I like the 1502. In fact, I like it better than the "improved" 1503 with the LCD screen. The trace was sharper and quicker responding.

A coworker of mine flew RC controlled aircraft. He had a hi-tech Ni-Cad battery charger that could resurrect a bad TEK battery pak about 2/3s of the time by subjecting it repeated charge-discharge cycles. Took about a week each.

I never knew about the 1 ma drain. I always thought the main problem was the age of the batteries and the high temperature. The only places I ever used a 1502 were in Ft. Bliss, TX (gets sort of warmish), Saudi Arabia, and Bahrain (really warmish).

John

[tggzzz]

I like the 1502. In fact, I like it better than the "improved" 1503 with the LCD screen. The trace was sharper and quicker responding.

A coworker of mine flew RC controlled aircraft. He had a hi-tech Ni-Cad battery charger that could resurrect a bad TEK battery pak about 2/3s of the time by subjecting it repeated charge-discharge cycles. Took about a week each.

I never knew about the 1 ma drain. I always thought the main problem was the age of the batteries and the high temperature. The only places I ever used a 1502 were in Ft. Bliss, TX (gets sort of warmish), Saudi Arabia, and Bahrain (really warmish).

The manuals state "recharge every month", but don't explain why that is necessary

The chart recorder is permanently connected to the battery, and is responsible for a lot of the current drain. I can't remember what happens with the XY-output option or an empty slot, but the battery is not disconnected and there is still some drain.

[JSC]

Everyone always says, "RTFM.", but alas, hardly anybody does.

John

[AMR Labs]

I like the 1502. In fact, I like it better than the "improved" 1503 with the LCD screen. The trace was sharper and quicker responding.

A coworker of mine flew RC controlled aircraft. He had a hi-tech Ni-Cad battery charger that could resurrect a bad TEK battery pak about 2/3s of the time by subjecting it repeated charge-discharge cycles. Took about a week each.

I never knew about the 1 ma drain. I always thought the main problem was the age of the batteries and the high temperature. The only places I ever used a 1502 were in Ft. Bliss, TX (gets sort of warmish), Saudi Arabia, and Bahrain (really warmish).

The manuals state "recharge every month", but don't explain why that is necessary

The chart recorder is permanently connected to the battery, and is responsible for a lot of the current drain. I can't remember what happens with the XY-output option or an empty slot, but the battery is not disconnected and there is still some drain.

Guys, just a friendly suggestion for the benefit of everyone on this long and distinguished thread about Tek 2465 scopes, and try not to wander off too far to other unrelated things like the 1502 scope or RC controlled aircraft, etc. Suggest it would be best to open a separate new thread and move the discussion there of those other topics. Thank you.

[JSC]

Sorry. I have been a moderator. I should have known better. 

[jonpaul]

Please start a NEW thread eg "Tektronix 1502/1503 TDR".

j