Agilent Technologies 4349B Manual page 218

The typical pull-up resistor values are:
8. Reinstall the A1 main board, the A2 board, and the cover.
B-10 Handler Interface Installation
Pull-up Pull-up Resistor
Voltage Agilent Part Number
5 V 0757-0278 (1.78 k )
9 V 0757-0279 (3.16 k )
12 V 0698-3154 (4.22 k )
15 V 0757-0438 (5.11 k )
EXT DCV2 EXT TRIG
SW1-1 SW1-2
5 to 6 V Close
6 to 9 V Close
9 to 15 V Open
KEY LOCK
SW1-3
Close Close
Open Close
Close Open
4349B