This is only a preview of the April 1995 issue of Silicon Chip. You can view 29 of the 96 pages in the full issue, including the advertisments. For full access, purchase the issue for $10.00 or subscribe for access to the latest issues. Articles in this series:
Items relevant to "Build An FM Radio Trainer; Pt.1":
Items relevant to "A Photographic Timer For Darkrooms":
Items relevant to "Balanced Microphone Preamplifier & Line Mixer":
Items relevant to "50W/Channel Stereo Amplifier; Pt.2":
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PRODUCT SHOWCASE
Portable DSO & test
instrument
The Palmscope 320, designed and
manufactured by Escort Instruments,
is unlike other portable, integrated test
instrument packages.
The four auto-ranging instruments
integrated into Escort's Palmscope
320 are: a 2-channel 20MHz digital
storage scope; a 3-3/4 digit true-RMS
digital multimeter (with AC/DC amps);
a 7-digit, 20MHz frequency/period
counter and an 8-channel, 20MHz logic analyser. The unit has specifications
normally only found on dedicated
bench top instruments.
The unit has specifications normally
only found on dedicated bench top
instruments. Some of these specifications include: 2K (1920 point) deep
DSO memory; accuracy of 10ppm on
the frequency counter and an 8 channel logic analyser with both timing
and state signal displays.
The Palmscope 320 is supplied
complete with oscilloscope and
multimeter probes, protective rub-
VF-100 true-RMS
mains monitor
For country people who generate
their own electricity, whether by
wind, solar or water power, Callignee Electronics has released the
VF-100 mains monitor.
The device is intended to prevent
damage to sensitive equipment by
verifying that generators are running
at the correct speed and that battery
inverters are adjusted correctly.
The unit measured "true RMS
voltage" and cycles per second" of
the mains supply and displays the
results on a LED bar-graph display.
The VF-100 is also widely used by
electricians and generator mechanics who service and install alternative power systems.
The price is $170 plus tax where
applicable. Write for a pamphlet to
Callignee Electronics, PO Box 483,
Traralgon, Vic 3844 or phone (051)
955 503.
ber holster, AC power pack, NiCad
rechargeable battery pack and slim
brief-case style carrying case. Options
include an RS-232 interface cable,
PC data transfer software and logic
analyser probes.
For further information contact Emona Instruments, 86 Parramatta Road,
Camperdown, NSW 2050. Phone (02)
519 3933. Fax (02) 550 1378.
New A/D converter
board from Procon
Procon Technology has released
an externally mounted analog input
board that extends its range of input/
output boards manufactured in Australia. The ADC-808 provides eight
analog inputs with 8-bit resolution
and is available with 0 to 10V or 0 to
20mA input ranges.
Other configurations are available
on request. An industrial version, the
ADC-808/I, is also available with 500
volt isolation between each analog
input, detachable screw terminals for
easy installation and extended supply
voltage range. The board measures
240mm by 100mm and is capable of
being DIN rail mounted.
A single IBM-PC interface card
(PB-BD-IO) is available that plugs
into an 8-bit card slot and connects
to 15 ADC-808 boards. This offers up
to 120 analog inputs. Alternatively,
the boards may be connected to any
standard bi-directional parallel printer
port (available on most notebook and
industrial computers) to provide up
to 56 analog inputs. Different configurations of analog and digital input/
output cards are possible with this
interface.
Typical applications include process
April 1995 81
monitoring and control, energy management, home automation, security
systems and industrial control. Other
boards are available in the range, including opto-isolated digital input and
relay output boards. All are available
with the industrial option.
All boards come with example IBMPC software for programming from
most languages and are compatible
with the Programmable Logic Control
(PLC) language, developed by Procon
Technology.
For further details contact Peter
King, Procon Technology, PO Box 655,
Mount Waverley, Vic 3149. Phone (03)
807 5660. Fax (03) 807 8220.
CCTV observation
systems
The OLS-100 with 10" screen and
OLS-120 with 12" screen, are complete packaged plug-in ready to use
observation systems. They are Intel
microprocessor controlled and feature
automatic, period adjustable sequential camera switching, 2 way monitor/
camera audio communication, sensor
inputs & VCR output.
Each package includes a combination monitor/intercom and automatic
4-channel switcher, a 400-line 0.2 Lux
CCD camera with 12mm lens, a camera
stand and a 20 metre camera cable.
To use, simply mount the camera,
connect the monitor and switch on.
Camera cable length may be extended
using a plug-in coupler. The single
lightweight multi-core 5mm diameter
camera cable is installed with the aid
of adhesive cable holders.
Each unit supports up to four cam-
eras and four sensors. Three styles of
intercom camera units are available,
conventional C mount, eyeball and
flat, with wide angle lenses. In addition, tiny pinhole modules, which can
see through a 2mm hole, are available
for concealed applications.
Sensor inputs on each camera allow
monitoring of camera locations using
PIR or other devices. If a sensor is
tripped, an alarm sounds and the image
from the camera in the violated area
is automatically displayed on screen.
PowerPCB Cad package
PADS Software Inc has announced PowerPCB for PC
board design, intended for users who work with UNIX or
Windows. This has a number of advanced features including
a shape-based PCB editor which allows freedom from grid
restraint during placement, routing and editing, a dynamic
route editor which has semi-automatic 45* routing to avoid
obstacles or move them out of the way, plus conditional
rules and design rules hierarchy.
At the same time as the release, special offers are being
made to users of protel and P-CAD to enable them to buy
PADS software.
For further information, contact the Australian distributors, GEC Electronics Division, Unit 1, 38 South St,
Rydalmere, NSW 2116. Phone (02) 638 1888.
82 Silicon Chip
Packaged sets from $699 including tax, are available from
Allthings Sales & Services, PO
Box 25, Northlands, WA 6021.
Phone (09) 349 9413.
High capacity tape
backup system
Hewlett-Packard has announced the release of its
Jumbo 1400 tape backup
system which provides 680
megabytes of storage on a single mini-cartridge or 1.36Gb
using data compresion.
The Jumbo 1400 is an internal drive that installs in
normal 3.5-inch or 5.25-inch
half-height bay. It can inerface
to a PC's floppy disc controller
but the system also includes a
separate high speed controller
that takes advantage of the
drive's maximum transfer
rate of 2Mb/s and provides
backup rates of up to 15Mb/
minute. The system includes
one pre-formatted mini cartridge and backup programs
for Windows and DOS.
Australian pricing is expected to be under $700. For
further information, contact
Hewlett-Packard by phoning
131 347.
New Yokogawa
digital scope
Wi t h u n i q u e 1 0 - b i t ,
100Ms/s A/D converters in
each channel and a 100K
word length, the new DL4100
digital oscilloscope from
Yokogawa gives four times
better vertical resolution and
100 times better horizontal
resolution than scopes with conventional 8-bit A/D converters and 1K
word memories. This allows highly
accurate measurements to be made
on the most complicated waveforms.
The DL4100, 4 channel 150MHz
digital storage oscilloscope is designed
specifically for use where accurate and
reliable measurements are to be made
on complicated waveforms, such as TV
signals, AM signals and noise signals.
Greater measurement accuracy is
also achieved in multi-channel measurements by virtue of the DL4100's
split display mode. This allows a full
scale to be applied to each signal in a
separate screen area, rather than the
amplitude of the trace having to be
reduced to view each input signal,
and thus incurring an increase in
errors. Also ensuring high accuracy
measurements at all times, the DL4100
automatic self-calibration feature initiates every 30 seconds or when settings
such as time/div are changed.
When the DL4100 is to be used for
advanced analysis or as part of a larger
measurement system, or if hard copy
plots are to be obtained, connection
can be made via a built-in GPIB interface.
For further information, contact
Yokogawa Australia Pty Ltd, 25-27
Paul Street North, North Ryde, NSW
SC
2113. Phone (02) 805 0699.
April 1995 83
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