HP 97s test

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HP 97s test

07-15-2023, 07:06 AM

Post: #1

zixingcheche Offline

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Posts: 73
Joined: Oct 2022

HP 97s test

Hello all,

I just got a HP97s with good shape both calculator & BCD interface.
the calculator seems work well. but for the BCD interface. Does anyone know how to test it?

I just tested it with multi-meter to measure the voltage between:
---- pin1(GND) and pin26 DC 0V
---- pin1(GND) and pin27 DV 0.3mv
---- pin1(GND) and pin28,29,30/ it is DC4.5V
---- pin1(GND) and pin6~25 & P31~50/ it is DC5.3V

please give me some advice, thanks!

BR,
bai

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Messages In This Thread

HP 97s test - zixingcheche - 07-15-2023 07:06 AM

RE: HP 97s test - AndiGer - 07-15-2023, 08:38 AM

RE: HP 97s test - zixingcheche - 07-15-2023, 09:21 AM

RE: HP 97s test - teenix - 07-15-2023, 09:38 AM

RE: HP 97s test - John Ioannidis - 07-18-2023, 01:33 AM

RE: HP 97s test - teenix - 07-18-2023, 02:04 AM

RE: HP 97s test - AndiGer - 07-18-2023, 05:10 PM

RE: HP 97s test - zixingcheche - 07-15-2023, 10:01 AM

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