Maintenance And Support

Set Up HPIB For HP8648C Signal Generator

November 28, 2011 | 679 views |

1. Connect the device through the HPIB of the power supply HP6624A (HPIB) or whatever your power supply model may be.  To check the hpib bus, go to shell as root:
/opt/hp3070/bin/btio -hpib -scan    (this will tell you which HPIB exists, it should display your HP6624A or HP6621A).

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2. cd /dev and ls -al (this will show you all devices with their address in the system, look for 0x07??00 where ?? is the hex address of the device you need to set).
Ex: 0x070800    hp3488 (/dev/hp3488 has address of 08)

3. If you want to install a device file yourself, make sure there’s no conflicting address.
Ex: I have address 0c that’s not in the dev list and I like to create an hp8648c file for my HP8648C.
mknod /dev/hp8648c c 21 0x070c00 (0c is the address of the device HP8648C).
chmod 666 /dev/hp8648c (set permission for everyone)

4. Checking to see if it does talk in BTbasic:
assign @HP8648C to “/dev/hp8648c” (make sure the device address is set at 12 decimal = 0c)
output @HP8648C; “FREQ:CW 1550 MHZ;:FM:DEV .1KHZ”
you should see the device operating at 1550MHZ with DEV of .1 KHZ.


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