Agilent Technologies E6198B User Manual page 282

B
Register Definitions
Instrument Relay 1-8 (W)
Base + 6
B-66
• Busy~: 0 indicates busy, 1 indicates not busy.
Write and Read Bits:
• OAR: 0 causes no change, 1 causes all relays to open
• GndRly: 0 opens relay from Inst2 to System Gnd (default), 1
closes relay from Inst2 to System Gnd
• DAC1Rly: 0 opens relay from Inst1 to DAC1 (default), 1
closes relay from Inst1 to DAC1
• DAC2Rly: 0 opens relay from Inst1 to DAC2 (default), 1
closes relay from Inst1 to DAC2
• Reset: 0 causes no change, 1 causes board reset and triggers
the relay timer. Clears itself afterward.
Not Used Base + 3
Register offset 3
h
addressing simpler.
Abus control and protection bypass relay (W) Base + 4
Instrument matrix card Abus and protection bypass relay
control register. All relay control registers are positive-true
logic: writing 0 opens the relay and writing 1 closes the relay.
Bits 7
Write AB4 AB3
• Writing to PB4-PB1 sets state of protection bypass relays.
• Writing to AB4-AB1 sets state of Abus disconnect relays.
Not Used Base + 5
Register offser 5
h
addressing simpler.
UUT Common to Instrument Bus
h
Bits 7
Write Inst Inst
8
h
used only for placeholder to make software
6 5 4
AB2 AB1 PB4
h
used only for placeholder to make software
6 5 4
Inst Inst Inst
7 6 5
E6198B Switch/Load Unit User Manual
h
3 2 1
PB3 PB2 PB1
3 2 1
Inst Inst Inst
4 3 2
0
0
1