Measurement WBK18 User Manual

WBK11A

Description

The WBK11A is a simultaneous sample-and-hold card (SSH) that provide a means of obtaining concurrent
(<150 ns) capture from up to 8 input channels. The card virtually eliminates channel-to-channel time
skewing. The card is controlled by the acquisition system’s base WaveBook.

Simultaneous Sample & Hold Card

Important Notice! WaveBook/516E Users

WBK option cards for WaveBook/516E are installed at the factory per customer order.
Users are not to remove or install cards for these products as the cards are not “plug-and­play” for these devices and erroneous signal values could result. If you desire to remove
or add a card to WaveBook/516E contact the factory or your service representative.

Important Notice! WaveBook/516, /516A, /512A, and WBK10A Users

With exception of the WBK30 option, WBK option cards for WaveBook/516, /516A,
/512A, and WBK10A are installed at the factory per customer order. Users are not to
remove or install cards for these products [other than WBK30 series cards] as the cards
are not “plug-and-play” for these devices and erroneous signal values could result. If you
desire to remove or add a card to these products, contact the factory or your service
representative.

The WBK11A can be installed inside a WaveBook or in a WBK10A series module; however, it must be
installed by a qualified service representative (see the important notice above).

When using a WaveBook with an SSH channel enabled, the per-channel sample rates are
reduced. The rate reduction is the same as that which would occur if another channel were
added. The per-channel rate (with SSH enabled) is:

1 MHz / (n+1), where n is the number of active channels.

The WBK11A SSH card can accommodate higher gains than the main unit because its gains are fixed for
each channel prior to the acquisition. You can use WaveView to set each channel to the ranges listed in the
specifications on page 2. All channels equipped with SSH circuitry are sampled simultaneously as a
system.

P10

mates

with

WaveBook

J10

One of 8 Channels (Typical)

Offset Adjust

Diff. Amp.

+
PGA

-

Octal

DAC

SCI - Serial

Configuration Interface

Sample/

MUX

Hold

Buffer

Amplif ier

P11

mates

with

WaveBook

J11

WBK11A – SSH Card

WBK11A Block Diagram

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WBK11A, pg. 1

Hardware Setup

Configuration

All WBK11A configurations are controlled by software. There are no hardware settings.

Reference Note:
For detailed WaveView information refer to the WaveView Document Module. A PDF version
of the document can be accessed from the data acquisition CD via the <View PDFs> button on
the CD’s opening screen.

Installation

There is no user installation permitted. See notes on page 1.

WBK11A – Specifications

Name/Function:
Number of Channels
Connectors

a 36 pin-socket connector mates with a 36-pin connector

Accuracy

Offset
Aperture Uncertainty
Voltage Droop
Maximum Signal Voltage

: ±0.025% FS for WaveBook/512A applications.

: ±1 LSB max

Input Voltage Ranges

Before a scan sequence begins, the input voltage ranges can be programmed via software.
The ranges can be expanded as follows:

Unipolar

0 to +10 V
0 to +5 V
0 to +2 V
0 to +1 V
0 to +0.5 V
0 to +0.2 V
0 to +0.1 V

Bipolar

: Bipolar applies to

-10 to +10 V

-5 to +5 V

-2 to +2 V

-1 to +1 V

-0.5 to +0.5 V

-0.2 to +0.2 V

-0.1 to +0.1 V

-.05 to + .05 V This range applies to WBK 10A only.

WBK11A; 8-Channel Simultaneous Sample-and-Hold Card

: 8

: Internal to the WaveBook/512 series, or WaveBook/516 series device;

For WaveBook/516 Series applications, see the table on page 3 of this WBK11A document module.

: 75 ps max

: 0.1 mV/ms max

: ±5.00 VDC (×1)

:

: Unipolar applies to WBK 10A only.

WaveBook/516, /516A, /516E, /512A, and WBK10A

Programmable Gain Amplifier Gain Ranges

Weight

: 0.14 kg (0.3 lb)

pg. 2, WBK11A

: ×1, 2, 5, 10, 20, 50, 100

988396

WBK11A – SSH Card