HP 8-Channel 196 kSa/sec Digitizer plus DSP E1433A manual Slot

HP E1433A User's Guide

The C-Language Host Interface Library

Managing Multiple-mainframe Measurements

In a single mainframe measurement, the HP E1433A communicates with other HP E1433As through the TTLTRG lines. However, when using the VXI-MXI bus extender modules, the TTLTRG lines, which carry the group synchronization pulse and sample clock, are extended only in one direction. This unidirectional signal connection restricts the types of measurements you can make in a multiple mainframe environment.

You cannot perform the following types of multiple mainframe measurements:

￿Unequal pre-trigger delay settings between mainframes

￿Channel triggering by channels in Mainframe B

￿Lower spans or longer blocksizes in Mainframe B

￿Different digital filter settling times between HP E1433A modules

Slot 0	HP E1482B			HP E1433A
Contoller
	Fail Acs Trigger Fail Acs		Trigger
	ExSamp Cal ExTrig ExSamp Cal ExTrig
	8-CHANNEL 196	8-CHANNEL 196
	kSa/s DIGITIZER	kSa/s DIGITIZER
	+DSP	+DSP
	Chan	Chan
	5-8	5-8
	Chan		Chan
	1-4		1-4
	HP E1433A	HP E1433A		VXI Mainframe A

Fail Acs Trigger Fail Acs Trigger
ExSamp Cal ExTrig ExSamp Cal ExTrig
8-CHANNEL 196	8-CHANNEL 196
kSa/s DIGITIZER	kSa/s DIGITIZER
+DSP	+DSP
Chan	Chan
5-8	5-8
Chan	Chan
1-4	1-4
HP E1433A	HP E1433A	VXI Mainframe B
HP E1482B		HP E1433A

Figure 4-1: Multiple mainframes - two mainframes

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