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E1459A/Z2404B User and SCPI Programming Guide
1
Installing and Configuring the
E1459A
The Keysight E1459A 64-Channel Isolated Digital Input/Interrupt module
1
(formerly known as the Z2404B
) provides 64 isolated digital input channels
configured as four 16-bit ports. The module is used for sensing signals and
detecting edge changes on digital inputs. The module is a C-Size VXIbus
register-based product that operates in a C-Size VXIbus mainframe.
Each isolated channel can withstand up to 115 Vac RMS or 115 Vdc difference in
ground potential between channels. The input threshold for each channel is
selectable with a jumper to allow for inputs with high logic levels from 5 to 48
volts. Each channel can be individually masked to generate an interrupt on a
positive and/or negative edge transition. Channel inputs are also "debounced" to
help prevent erroneous transition detection on noisy signals. Two programmable
clock sources control the debounce circuitry (one for ports 0 and 1, one for ports
2 and 3).
Functional Description
The Keysight E1459A simultaneously monitors each channel for the occurrence
of transitions, (i.e., edge events), or for level sensing signals which meet
preprogrammed parameters for magnitude and duty. Each channel is electrically
isolated from all other channels, power, ground, and other current paths within
the limits of specification. Each channel may be independently programmed to
sense only positive transitions, only negative transitions, or transitions of either
polarity.
Figure 1 shows the functional block diagram for the module.
1 The Keysight E1459A and Z2404B are functionally identical. The Keysight E1459A is provided with a
downloadable SCPI driver and a VXIplug&play driver; the Z2404B was not provided with a language driver.
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