HP 5890 SERIES II Service Manual page 322

J2.7 NRFD
J2.8 NDAC
J2.9 IFC
J2.10 SRQ
J2.11 ATN
J2.12 SHEILD
J2.13 DIO5
J2.14 DIO6
J2.15 DIO7
J2.16 DIO8
J2.17 REN
J2.18 DCOM- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
J2.19 DCOM
J2.20 DCOM
J2.21 DCOM
J2.22 DCOM
J2.23 DCOM
J2.24 LOGIC- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
J3.1 SHEILD
J3.2 TX (TRANSMIT)
J3.3 RX (RECEIVE)
J3.4 NC
J3.5 NC
J3.6 NC
J3.7 GND
J3.8 NC
J3.9 NC
J3.10 NC
J3.11 NC
J3.12 NC
J3.13 NC
J3.14 NC
J3.15 NC
J3.16 NC
J3.17 NC
J3.18 NC
J3.19 NC
J3.20 NC
J3.21 NC
J3.22 NC
J3.23 NC
J3.24 NC
J3.25 NC
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| 18 thru 24 tied
| to digital
| ground
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APPX A- 23