Agilent Technologies 87130A Switch User Manual


 
2-6 Agilent 87130A Operating and Service Manual
Installing the 87130A Attenuator/Switch Driver
Connecting Switch Drivers to Switches and Attenuators
CAUTION
Do not connect or disconnect relays from 84940A external driver cards with
prefixes prior to US4016 while the attenuator/switch driver line switch is
turned on. An unintentional short between the + 24 V wire and the driver
outputs may result in a catastrophic driver board failure.
Although these driver cards will function properly when driven by the
87130A, they are only specified to 800 mA maximum per group of four
relays (200 mA per relay section); however, the + 24 V power supply from
the 87130A provides 3 A of dc current.
Figure 2-4 84940A External Driver Card with Prefixes Prior to US4016
Figure 2-5 84940A External Driver Card with Prefixes US4016 and Above
The 84940A driver board includes the following items:
Description Quantity Part Number
Driver board 1 84940A
Cable, 36-pin to 36-pin SCSI, female to female, 5 feet, 28 AWG 1 70611-60010
Cable, 34-pin to 36-pin SCSI, 18 inches, 28 AWG 1 70611-60011
Ribbon cable kit, 36-pin to 34-pin, 6 feet, 28 AWG 1 70611-60013
Break-Off Section