HP E1586A User Manual

Contents

HP E1586A Rack Mount Terminal Panel User’s Manual

Description ...................................................................................................................5

Connecting to VXIbus Instruments .............................................................................5

Interconnect Cables ...............................................................................................5

Terminal Block Connections .......................................................................................6

Using the Terminal Panel for Reference Temperature Measurements ........................ 7

Mounting the HP E1586 Terminal Panel ..............................................................7

Reference Thermistor Connections and Operations ..............................................7

Using the Option 001 RF Filter ...................................................................................9

Analog Inputs Using Three-wire Cabling .............................................................9

Analog Inputs Using Two-Wire Cabling ............................................................10

Configuration for HP E1413/E1415 with Digital I/O SCPs ...............................11

Typical Reference Temperature Measurements ........................................................12

Measuring Using the Center Thermistor .............................................................13

Measuring Using the Left, Center, and Right Thermistors .................................14

Contents 1

2 Contents

Certification

Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett­Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and
Technology (formerly National Bureau of Standards), to the extent allowed by that organization's calibration facility, and to the
calibration facilities of other International Standards Organization members.

Warranty

This Hewlett-Packard product is warranted against defects in materials and workmanship for a period of three years from date of shipment.
Duration and conditio ns of wa rrant y for this p roduc t may be su perseded when th e pro duct is in tegrate d in to (bec omes a part of) other HP
products. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be
defective.

For warranty service or repai r, this produc t must be return ed to a service facility design ated by Hewlett-Pa ckard (HP). Bu yer sha ll pr epay
shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges,
duties, and taxes for products returned to HP from another country

HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when
properly installed on that product. HP does not warrant that the operation of the product, or software, or firmware will be uninterrupted
or error free.

Limitation Of Warranty

The foregoing warranty sh all not apply to defects resu lting from im proper or ina dequate ma intenance by Buyer, Bu yer-supplie d products
or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper
site preparation or ma intenance.

The design and implementation of any circuit on this product is the sole responsibility of the Buyer. HP does not warrant the Buyer's
circuitry or malfunctions of HP products that result from the Buyer's circuitry. In addition, HP does not warr ant any damage th at occurs
as a result of the Buyer's circuit or any defects that result from Buyer-supplied products.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR
ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT,
TORT, OR ANY OTHER LEGAL THEORY.

Notice

The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO
WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors
contained herein or for incidental or cons equential damages in connection with the furnishing, performance or use of this material. This
document contains proprietary infor mation which is protected by copyright. All rights are reserved. No part of this document may be
photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. HP assumes
no responsibility for the use or reliability of its software on equipment that is not furnished by HP.

HP E1586A Rack Mount Terminal Panel Installation and User's Manual

Copyright © 1996 Hewlett-Packard Company. All Rights Reserved.

Edition 1

Front Matter 3

Å

Documentation History

All Editions and Updates o f this manu al and t heir cre ation da te are li sted belo w. The first Edi tion o f the m anual i s Edition 1. The Edition
number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages to
correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of the
Update information for the previous Edi tion. Each ne w Edition or Upd ate also incl udes a revised copy of this d ocumentation h istory page.

Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mayl 1996

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injury or damage to the product.

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operating the equipment
electrical shock in case of fault.

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Direct current (DC).

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WARNINGS

The following genera l safety precautions must be observed duri ng all phases of operation, service, and repair of this product . Failure to
comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and
intended use of the product. Hewlett-Packar d Company assumes no liabilit y for the customer's failu re to comply with these requirements.

Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provided from the mains power source to the product input wiring terminals or supplied power cable.

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4 Front Matter

HP E1586A Rack Mount Terminal Panel

Description

The HP E1586 Rack Mount Ter mina l Pane l prov ides e xtende d conne ctions
to certain VXIbus instruments, like the HP E1413C High Speed A/D
Converter, HP E1415A Algorithmic Closed Loop Controller, and HP
E1476A 64-Channel T/C and Low Off set Relay Mul tiplexer . The Ter minal
Panel is recommended if the VXIbus instruments are located a distance
away from the measurement connections. The Terminal Panel provides up
to 32 3-wire connections to al low for 32 channel connect ions to the VXIbus
instruments.

Since the Terminal panel only provides 32 channels, use an additional HP
E1586 Terminal Panel when using it with an HP E1413C, E1415A, or
E1476A.

The Terminal Panel al so provides t hree on-board t hermistors for sensing the
isothermal reference temperature of the Terminal Panel. The three
thermistors provide substantial accuracy improvements when temperature
gradients are generated across the length of the Terminal Panel.

The HP E1586 Terminal Panel can be o rdered with optional High Frequency
Common Mode Filters (i.e., HP E 1586 Option 001, RF Filters). Th ese filters
are connected to the input terminal and are used to filter out AC common
mode signals present in the cables that connect between the terminal panel
and the device under test. The filters are useful for filtering out small
common mode signals below 5 Vp-p. To order these filters , order HP E1586
Option 001.

Connecting to VXIbus Instruments

Figure 1 on page 6 shows how to connect the Terminal Panel to a VXIbus
instrument. The connections are made to an HP E1413C Option A3F
Terminal Module.

Interconnect Cables

The panel uses SCS I cables to make the connections to the VXIbus modules.
Note that the modules must have the correct Terminal Modules (e.g., HP
E1413C/E1415A Opt A3F) installed to make these connecti ons. Each cable
provides connect ions for 16-channe ls thus each Termin al Panel requi res two
cables to make 32-channel connections.

The cables do not come with the Terminal Panel and must be ordered
separately. The available cables described in the following.

Standard Cable

This cable (HP E1588A) is a 16-channel twisted pair cable with an outer
shield. This cable is suita ble for relatively short cable runs.

HP E1586A Rack Mount Terminal Panel 5

SCSI Cables

HP E1586A

Terminal Panel

C-Size VXIbus Module

Option A3F

Terminal Module

*Optional

Option 001 Board

Option A3F

Terminal Module

HP E1586A

Terminal Panel

*Optional

Option 001 Board

SCSI Cables

Figure 1. Connecting the T e rminal Panel

Custom Length Cable

This cable (HP Z2220A Option 050) is available in custom lengths. It is a
16-channel twist ed pair cable wit h each twisted pa ir individu ally shielded t o
provide better quality shielding for longer cable runs.

Terminal Block Connections

Figure 2 on page 7 shows typical connections to the Terminal Panel. The
panel provides four terminal blocks for the connections. These blocks
consist of eight three-wire sets of terminals with each terminal set ma rked
HI, LO, and G. The HI marking is for High connection, LO is for Low
connections, and G is for Guard connections.

Each terminal set also includes channel numbers, like 0(32), 4(36), etc.,
where the numbers outsi de the p arent hesis indica te cha nnels 00-31, an d the
numbers inside th e parenthesis indicate channel s 32-63. These numbe rs, and
the HI, LO, and G terminals, c orrespond directly t o the channel numbers and
input terminals of the HP E1413C and E1415A.

* To use the HP E1586 Terminal Panel WITHOUT

the Option 001 Board , Plug the SCSI Cables
directly into the E1586 Terminal Panel

6 HP E1586A Rack Mount Terminal Panel

Using the Terminal Panel for Reference Temperature

C

Measurements

The following explains how to use the Terminal Panel as an isothermal
reference panel for thermocouple measurements. This explanation is for
connections to an HP E1413C High Speed A/D Converter or an HP E1415A
Algorithmic Closed Loop Controller

Mounting the HP

E1586 Termin a l

Panel

Reference

Thermistor

Connections and

Operations

Thermistor Excitation

Sources

The Terminal Panel can be mounted in a standard size instrument rack. To
minimize temperature gra dients across the panel, i t should be mounted in the
rack such that i t is awa y from the other he at so urces. The bottom of the r ack
is usually the preferred location. Take particular care to minimize the
temperature differences across the horizontal width of the Terminal Panel,
since it is most susceptible to horizontal temperature gradients across its
longest dimension.

The HP E1586 Terminal Panel’s three thermistors are located next to the
channel 3 terminal block , bet ween channels 11 and 16, and next t o cha nne l
24 (see Figure 2 on page 7).

Both an HP E1413C or E1415A provides a 122uA current source as the
excitation for the thermistors. This is available on the Terminal P anel’s
terminals labeled HI-I and LO-I. For other modules, use an external
Voltmeter or Multimeter like the HP E1411 or E1412.

The excitation current is ONLY available to the Terminal panel connected
to channels 00-31 of the HP E1413C/E1415A. This current is NOT on the
Terminal Panel connected to channels 32-63 of the HP E1413C/E1415A.

Channels

0-3 or 32-35

Terminal Block

Channels

4-7 or 36-39

Terminal Block

Thermistor

Terminal

Block

Channels

8-11or 40-43

Terminal Block

Channels
12-15 or 44-47
Terminal Block

Figure 2. Terminal Panel Connections

hannels
16-19 or 48-51
Terminal Block

Channels
20-23 or 52-5 5
Terminal Block

HP E1586A Rack Mount Terminal Panel 7

Thermistor

Terminal

Block

Channels
24-27 or 56- 59
Terminal Block

Channels
28-31 or 60-63
Terminal Block

The following shows how to connect the thermistors to the HP E1413C/

C

g

E1415A current source. For the Terminal Panel’s on-board thermistors
excitation, connect HI-I to HI-TI, and LO-I to LO-TI, respectively.

Connecting One Terminal Panel for Reference Temperature
Measurements

In this configuration, a single Terminal Panel is used with an HP E1413C/
E1415A to provide up to 32 c hann els for t emperat ure mea surement s. Make
the following connecti ons on t he t her mistor terminal block of th e Ter m ina l
Panel: Connect HI-I to HI-TI Connect LO-I to LO-TI

This provides the excit ation current to all thr ee on-bo ard thermist ors on the
Terminal Panel. Figure 3 on page 8 shows the connection for a single
Terminal Panel

onnects All

Thermistors

One HP E1586 Terminal Panel

usin

All Thermistors

Figure 3. Connecting Three Thermistors on a Single Panel

Connecting Two Terminal Panels for Reference Temperature
Measurements

In this configuration, two Terminal Panels are used with an HP E1413C/
E1415A to provide up to 64 c hann els for t emperat ure mea surement s. Make
the following connections on the thermistor terminal blocks of both
Terminal Panels:

Connect HI-I to HI-TI of the First Terminal panel Connect LO-I to LO-TI of
the First Terminal Panel Connect LO-TI of the First Terminal Panel to HI­TI of the Second Terminal Panel Connect LO-TI of the Second Terminal
Panel to LO-I of the First Terminal Panel.

This provi des the excitation current to all six on-board thermistors on the
Terminal Panels. Figur e 4 on page 9 shows the connecti on for two Ter minal
Panels.

8 HP E1586A Rack Mount Terminal Panel

g

Connect
All Thermistors
on Both Panels

TwoHP E1586 Terminal Panels

usin

All Thermist ors on Eac h Panel

Figure 4. Connecting Six Thermistors on Two Panels

Using the Option 001 RF Filter

The HP E1586 Option 001 Terminal Panel has an additional board that
contains the RF Filt ers . The se filters consist of a 3-winding common-mode
transformers for each channel. These transformers greatly attenuate
common mode signals above 1 kHz. In combination with a properly
connected Option 001 Ter minal Panel, the HP E1413C/ E1415A can achieve
common mode rejection rat ios of >100 dB for signa ls from DC to >10 Mhz.

Analog Inputs

Using Three-wire

Cabling

These transformers do not limit the measurement bandwidth of the HP
E1413C/E1415A. The RF Filter Board, using on board jumpers, can be
configured for various wiring and Signal Conditioning Plug-on (SCP)
combinations for the HP E1413/E1415.

In this conf iguration, the HI, LO, and shield te rminals are used for each
channel. This is the preferred wiring for configuration o f low level analog
channels and provides the best common-mode rejection performance. To
configure the Termina l Panel , move the j umpers f or eac h channe l as sh own
in Figure 5 on page 10.

The configuration in the figure removes the RC-filters from the path and
enables the common-mode transformers. Be sure the side by jumpers are
moved into the same position, or poor Common Mode Rejection wil l result.

HP E1586A Rack Mount Terminal Panel 9

RC Filters Removed from Sign al Path and
Common-mode Transformer Enabled

Figure 5. Option 001 Three-Wire Cable Configuration

Analog Inputs

Using Two-Wire

Cabling

10 HP E1586A Rack Mount Terminal Panel

In this configuration, the HI and LO terminals are used for each channel,
without th e shield terminal being u sed. This is not the preferred wiring for
low noise rejection, but may be necessary for certain configurations. For
example, some isolation Si gnal Conditioning Plug-ons used by the E1413 or
E1415, such as the E1514, E1515, E1516, and E1517, must use this
configuration. This is because those SCPs have no shield conn ect io ns
available. To configure the Terminal Panel, move the jumpers for each
channel as shown in Figure 6 on page 11.

Since there is no shield available to drive the third winding of the
common-mode transformer, the transformer effectiveness is reduced. To
provide additional high frequency filtering, RC filters are provided on the
board.

Use of the filters decreases the low-frequency Common-mode Rej ection to
about 90 dB at 60 Hz, and t he measurement bandwidth to about 10 kHz for
the E1413 or E1415.

RC Filters Placed Into the Signal Path and
Common-mode Transformer Enabled

Figure 6. Option 001 Two-Wire Cable Configuration

Configuration for

HP E1413/E1415

with Digital I/O

SCPs

This configuration should be used for the HP E1413/E1415 Digital I/O
Signal Conditioning Plug-on (SCP). This especially the case when low level
analog SCPs are used with th e digital I/O SCP. This configur ation may make
it necessary to connect the digital channels through the E1586 Option 001
board. To configure the Terminal Panel, when usi ng a digital I/O SCP, mo ve
the jumpers for each affected channel as shown in Figure 7 on page 12

HP E1586A Rack Mount Terminal Panel 11

RC Filters Re movedfr om the Signal Path and
Common-mode Transformer Disabled

Figure 7. Option 001 Digital I/O SCP Configuration

Typical Reference Temperature Measurements

The following shows how to make ref erence tempera ture meas urements on
the E1586 thermist ors using the HP E1413 High Speed A/D Converter or t he
HP E1415A Algorithmic Closed Loop Controller.

The methods to measure the thermistor reference temperature depends on
the location o f the Termi nal Panel. Fo r Terminal Pane ls mounted a way from
heat sources, it is only necessary to measure the center thermistor. Use the
information in “Measuring Using the Center Thermistor“.

For Terminal Panels mounted in such a way that temperature gradients are
generated along its length, measure all three thermistors. Use the
information in “Measuring Using the Left, Center, and Right Thermistors”.

12 HP E1586A Rack Mount Terminal Panel

Measuring Us in g

the Center

Thermistor

To measure the center th ermistor, selec t an HP E1413C o r E1415A channe l
as a reference channel. Connect the reference channel’s HI and LO to the
center thermistor (thermistor 2) HI -T2S and LO-T2S terminals,
respectively. These connections are shown in Figure 8 on page 13.

If two Terminal Panels are used, each panel must be connected as above so
that both panels provide reference temperature measurements. These
connections are shown in Figure 9 on page 14.

Use the information in the HP E 1414C/E1415A User’ s manuals t o setup the
instruments to make the reference measurements. The following is an
example that uses two Terminal Panels to measure type K thermocouples.

SENS:REF THER,5000,1,(@100,132)

measures reference temperature measurements on channels 100 and 132

SENS:FUNC:TEMP TC,K,.06,(@101:131,133:163)

defines channels for temperature measurements

ROUT:SEQ:DEF (@100,101:131,13 2,1 33:1 63)

defines the scan list

.

One HP E1586 TerminalP anel

Measuring One Thermistor

nRfr

Figure 8. Center Thermistor Measurements on a Single Panel

n

h

nn

l1

HP E1586A Rack Mount Terminal Panel 13

TwoHP E1586 Terminal Panels

Measuring One Thermistor on Each Panel

on Reference Channels 100, 132

Figure 9. Center Thermistor Measurements on Multiple Panels

Measuring Us in g

the Left, Center, and

Right Thermist or s

To measure all three thermis tors, select three HP E1413C/ E1415A channels
as reference channel s. The rec ommende d method i s to use t hermis tor 1, the
left thermistor (HI-T1S and LO-T1S), as a reference for chan nels 0 - 7 (or
32 - 39), thermistor 2, the center thermistor (HI-T2S and LO-T2S), for
channels 8 - 23 (or 40 - 47), and thermistor 3, the right thermistor (HI-T3S
and LO-T3S), for channels 24 - 31 (or 56 - 63). Connect the reference
channels HI and LO terminals to the respective

Connect the reference channel’s HI and LO terminals to the appropriate
thermistor terminals ( e.g., ch anne l 100 HI and LO te rminal s to t hermist or 1
HI-T1S and LO-T1S termi nals, r espectively ). These c onnection s are sho wn
in Figure 10 on page 15.

If two Terminal Panels are used, each panel must be connected as above so
that both panels provide reference temperature measurements. These
connections are shown in Figure 11 on page 16.

Use the information in the HP E 1414C/E1415A User’ s manuals t o setup the
instruments to make the reference measurements. The following are two
examples that measure type K thermocouples. One example uses a single
Terminal Panel and the other uses two Terminal Panels.

14 HP E1586A Rack Mount Terminal Panel

One HP E1586 TerminalP anel

Measuring Three Thermistors

on Reference Channels 100, 101, 102

Figure 10. Left, Center, and Right Thermistor Measurements on a Single Panel

Example Using a Single

Terminal Panel:

Example Using Two

Terminal Panels:

SENS:REF THER,5000,1,(@100,101,102)

measures reference temperature measurements on channels 100 to 102

SENS:FUNC:TEMP TC,K,.06,(@103:131)

defines channels for temperature measurements

ROUT:SEQ:DEF (@100,103:107,10 1,1 08:1 23,1 02, 124: 131 )

defines the scan list

SENS:REF THER,5000,1,(@100,101,102,132,133,134)

measures reference temperature measurements on channels 100 to 102

SENS:FUNC:TEMP TC,K,.06,(@103:131,135:163)

defines channels for temperature measurements

ROUT:SEQ:DEF (@100,103:107,10 1,1 08:1 23,1 02,
124:131,132,135:139,13 3,1 40:1 55,134,156:163)

defines the scan list

Note that each referenc e channel (100, 101, 102, 132, 133, 134) imme diately
precedes its associated measurement channels in the scan list.

HP E1586A Rack Mount Terminal Panel 15

TwoHP E1586 Terminal Panels

Measuring One Thermistor on Each Panel

on Reference Channels 100, 101, 102

Figure 11. Left, Center, and Right Thermistor Measurements on Multiple Panels

16 HP E1586A Rack Mount Terminal Panel

132, 133, 134