PDFINFO H5550-01
2 to 16 Mbyte Instrument
Memory Module
HP E1488A
Technical Specifications
●
Adds memory to VXI Local Bus instruments
●
High-speed data transfers over VXI Local Bus
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Interfaces to VXI Data Transfer Bus
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Battery-backed static RAM
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Memory used by HP VXI digitizers and DSP
products
Description
The HP E1488A instrument memory module is a
C-size, 1-slot, register-based VXI device. It offers a
convenient way to extend the memory of an instrument
in 2 MB increments (Opt 1B2) up to 16 MB.
Several HP VXI instruments that make use of the local
bus may use the HP E1488A for high-speed data
transfers. Compatible products include: HP E1429B,
HP E1430A, HP E1437A, HP E1431A, E1432A Digitizers,
and HP E1485C Digital Signal Processor. A common
data transfer protocol was designed to ensure data
integrity during high-speed transfers. It implements a
full handshake for each byte of data, even with the
high-speed digitizers. The HP E1488A memory is single
ported, not FIFO. It can either store or send data, but
not both simultaneously.
HP E1488A
The HP E1488A offers a configurable memory size by
mounting the memory chips on plug-in circuit boards.
The memory size can be increased in the field simply by
plugging in additional memory boards and setting the
configuration switches. Multiple memory cards may be
placed in adjacent slots to form a larger memory
system.
Refer to the HP Website for instrument driver
availability and downloading instructions, as well as for
recent product updates, if applicable.
PDFINFO H5550-02
Multiple Memory Modules
If your application requires more memory than a single
module offers, multiple memory cards may be placed in
adjacent slots to form a larger memory system. For
example, if the HP E1429B digitizer is used as a
waveform recorder that requires 32 MB of data storage,
two HP E1488As can be installed in the next two slots.
This gives the HP E1429B a 32 MB memory that takes
data at full speed. If an additional 4 MB are needed,
simply install another HP E1488A in the next slot. The
number of modules is limited only by the number of
slots available in your VXI mainframe.
Battery-backed Static RAM
An on-board battery can be switched in to preserve the
data in case of power failure. By using the internal
battery, the module can even be removed from the
mainframe and still retain its data. For longer data
retention, other standby power sources available are
the VXI +5 V standby line and the faceplate BNC
connector.
Product Specifications
Memory
Memory size: 2 to 16 MB
Memory type: Low-power static RAM
Nonvolatility: On-board battery, VXI + 5 V standby, or
Battery life: Nominally 2 months at 25 °C, 7 days at 70
Battery backup: + 3 to + 5 V connection for external backup
Speed
Data transfer speed: VXI Local Bus (LBUS)—greater than
LBUS mode switch time: <2 ns switching from consuming data to
General
SCSI-2 interface: No
Interrupts: Upon reaching end of programmed byte
Device type: Register-based slave; A16, D16/D32
VXI Local Bus usage
(LBUS):
VXI backplane access: Serial through a single register access;
Transfer rate: >3 MB/s (16 b)
faceplate BNC
°C with maximum amount of SRAM onboard
(BNC)
80 MB/s nominal; VXI Transfer Bus—
greater than 3 MB/s in 16-bit mode
nominal, greater than 6 MB in 32-bit mode
nominal
passing data through from LBUSA to
LBUSC nominal
count
High-speed data transfers; read, source, or
pass through from LBUSA to LBUSC
shared RAM not supported
General Specifications
VXI Characteristics
VXI device type: Register based
Data transfer bus: A16, D16/D32
Size: C
Slots: 1
Connectors: P1/2
Shared memory: n/a
VXI busses: Local Bus A
C-size compatibility: n/a
Local Bus C
Instrument Drivers
See the HP Website (http://www.hp.com/go/inst_drivers) for
driver availability and downloading.
Command module
firmware: Downloadable
Command module
firmware rev: A.06
I-SCPI Win 3.1: Yes, not supported on VXLink
I-SCPI Series 700: Yes
C-SCPI LynxOS: Yes
C-SCPI Series 700: Yes
HP Panel Drivers: Yes
plug&play
VXI
Framework: No
plug&play
VXI
Framework: No
plug&play
VXI
Framework: No
Win
Win 95/NT
HP-UX
Module Current
I
PM
+5 V: 3.8 0.2
+12 V: 00
–12 V: 00
+24 V: 00
–24 V: 00
–5.2 V 1.9 0.2
–2 V: 0.8 0.2
I
DM
Cooling/Slot
Watts/slot: 25.00
∆P mm H
Air Flow liter/s: 2.60
O: 0.25
2
Ordering Information
Description Product No.
2 to 16 Mbyte Instrument Memory Module HP E1488A
2 MB Additional Memory HP E1488A 1B2
3 Yr. Retn. to HP to 1 Yr. OnSite Warr. HP E1488A W01
Shield, Backplane Connector HP E1400-80920
VXI Backplane Conn Shield Kit HP E1421-80920
2 Mbyte Memory Board for the HP E1488A HP E1488AU
3 Yr. Retn. to HP to 1 Yr. OnSite Warr. HP E1488AU W01
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