¿ªÔÆÌåÓýYour full-handshake hookup is correct, although it is missing the analyzer DTR to pc DSR (paralleled with pc CTS), but since you are configuring for no-handshake, it may not matter. ? You say the adapter DTR is putting out a negative level. It should assert (go positive) when the pc opens the port. ? The analyzer does need DCD and CTS inputs asserted high. My notes for my 8594E option 043 and firmware 950914 say that DCD asserted should indicate ¡®L¡¯ (for LISTEN, rx enable) in the lower right of the screen, which gets overwritten by ¡®T¡¯ (for TALK ENABLE) when CTS is asserted. ? Ed From: [email protected] [mailto:[email protected]] On Behalf Of andrianakisharis@... ? Hi all, I want to connect my HP 8595E to my PC using the only available port it
has, RS232 via a DB-25 connecter (option 023).
P1. GND ( It should be the shielding but it's shorted to GND) P2. is MC1488 Output so it should be the TxD P3. is SN75189 Input so it should be the RxD P4. is MC1488 Output so if we follow the universal pinout it may be RTS P5. is SN75189 Input so if we follow the universal pinout it may be CTS P6. unconnected P7. GND P8. is SN75189 Input? so if we follow the universal pinout it may be DCD P20. is MC1488 Output so if we follow the universal pinout it may be DTR ? So following the Programmer's Guide I made the following connections and i gave it a try ? SA? ? ? ? ? ? ?PC (USB RS232 adapter) P1. GND? ? ?Unconnected P2. TxD? ? ? RxD P3. RxD? ? ? TxD P4. RTS? ? ? DCD P5. CTS? ? ? DTR? ?(measured -6V coming from the adapter) P6. unconnected P7. GND? ? ?GND P8. DCD? ? ?RTS P20. DTR? ?CTS ? PS. SA is operating RS232 at -11V to +11V while my adapter is operating at -6V to +6V but this shouldn't be the case. ? But still I don't receive any replies. ? SA Baud rate is 9600, my RealTerm config is Parity None, Data bits 8,
Stop bit 1, No hardware flow control |
