System Options
In addition to the Ultra's comprehensive range of
standard facilities the following optional features are available:
- 128 channel 500VDC - measures down to 1R with
active guarding.
- 64 channel 1K VDC - double pole Kelvin
measurement down to 5 m R with active guarding.
- 32 channel 1K V Relay Energisation card, active
guarding and power switching on each channel.
- 200VDC General Purpose Relay Card with
independent floating power supplies.
- High voltage AC source module - 7 to 1K Vrms.
- 16 slot expansion racks.
Relay Modules
The 500 volt Single Pole Relay Module
provides the capability to switch up to 128 test channels on to the drive,
sense and guard highways of the Ultra measurement system. It requires one
slot position within the main system chassis.
The module has the additional optional capability of
being switched to the Guard mode, whereby the internal Sense highway is
routed to the system Guard highway. This allows accurate measurements of
external components when they are situated within a circuit. The module can
also be used as a general purpose relay switching matrix for routing
instruments and performing functional tests.
The 1000 volt Double Pole Relay Module provides the
capability to switch up to 64 test channels on to the Kelvin drive, sense
and guard highways of the Ultra measurement system. The module is designed
specifically for switching medium to high voltages up to 1000V DC. It
requires one slot position within the main system chassis.
For precision measurement, each channel is fully Kelvin
with independent force and feedback connections through the matrix. The
module can be set into Guard mode whereby the internal Sense highway is
routed to the system active Guard highway. This allows accurate measurements
of component values in-circuit, in cable harness, circuit board or
backplane assemblies. In addition to routing test connections to the
measurement system, the module can also be used as a general purpose relay
switching matrix for routing instruments and performing functional tests.
The 1000 volt Double Pole Relay Energisation Module
provides the capability to switch 32 channels on to the Kelvin drive, sense and
active guard highways of the Ultra measurement system. In addition, a single
pole relay matrix is provided to enable 32 channels to be switched to an
external power supply of up to 100V DC . It requires one slot position within
the main system chassis.
The Energisation Module contains 32
channels to the drive and sense highways of the Kelvin connection measurement
system, the active guard or to an external power supply of up to 100V. Unlike
the single and double pole modules, there is no restriction on the combinations
of test channels that may be switched to each highway. When using this module in
conjunction with the Ultra’s ability to make multiple continuity tests in one
program, an entire assembly can be tested under program control without the need
for operator intervention. It us particular useful for energising external
relays within a customers UUT, within the testing cycle.
The 200 volt General Purpose Relay Module provides forty
independent change over relays. In addition, each relay can be switched to the
standard Drive, Sense, Guard and Power Highways. The module also provides four
independent floating power supplies. It requires one slot position within the
main system chassis.
The module is partioned into four
groups Each group consists of 10 independent single pole change over relays that
are directly connected to the standard output 37 way ‘D’ type. These can all be
programmed independently and can be used for any number of general purpose
switching applications. In addition the common of each single pole relay can be
switched to one of the main system highways. Two are connected to the Sense
Highway, two are connected to the Guard Highway, two are connected to the Power
Highway and the remaining four are connected to the Drive Highway.
Each group also contains a floating low power voltage
source that can be used to energise UUT relays and circuitry. Two groups output
24 volts, one group outputs 12 volts and the remaining group outputs 5 volts.
Therefore in addition to general purpose switching, the
module can be used to energise UUT relays, take external voltage measurements, perform guarded resistance measurements and route external power to
various sources. | 
