DESCRIPTION
Each systems consists of one Rack Chassis
containing: 1 each module 408P, power supply; 1
each module 408M, controller, MPU; 1 to 8 module(s) 408A, independently variable
AC and/or DC
output voltage(s). All modules may be switched from AC to DC or DC to AC on command.
Remote
control via <GPIB> GPIB Interface Bus.
CUSTOMIZING
The model 408 is indicative of the flexibility
of EDC Engineering Department to design special
modifications to meet customers’ individual requirements. Please call us if you
have need of
customized references, calibrators, standards or sources.
APPLICATIONS
An imbedded standard for ATE and Data
Logging Systems. Synthesize linear velocity sensors,
simultaneous calibration of multiple instrumentation and data logging systems without
multiplexing
delays, simulation of transducers. Used for the design, evaluation and calibration
of accelerometers, amplifiers, A/D converters, digital and analog meters.
SPECIFICATIONS
OUTPUT
AC Range: 1mVac to 30Vac
rms.
DC Range: 1mV to ±30Vdc.
Resolution (minimum step change): 1mV.
Current: 50mA.
Accuracy:
|
AC Mode |
±(0.05% of setting + 5mV) |
|
DC Mode |
±(0.035% of setting + 1.0mV) |
Note: Traceability to National Institute
of Standards and Technology (N.I.S.T.), certificate of
compliance is supplied with all instruments.
Phase Angle Control: 0° or 180° (Programmable).
Phase Angle Accuracy: ±1°.
Frequency: Nominal 400Hz (same as input frequency).
Distortion: 0.07%.
All modules in the chassis, in the ac mode, will operate at the input frequency.
(See Input requirements below)
INPUT SPECIFICATIONS
The user supplies the predetermined
ac reference frequency. Note: The dc reference is installed
in the instrument.
Amplitude: 25Vac ±5Vac or 5Vac ±1Vac, selectable.
Total Harmonic Distortion: <3%.
Third Harmonic Distortion: <1%.
Input Impedance: 20k ohms.
Line Power: 115Vac ±10%, 50Hz to 60Hz.
Load Regulation: 0.005%.
Line Regulation: 0.001%.
Input Frequency: 350Hz to 450Hz.
GPIB PROGRAMMING
GPIB Programming Format (IEEE-488.1):
The 408 is “listener” and limited “talker”. Integrated
microprocessor GPIB Interface. The chassis is addressed with one Listen Address
(MLA). Each
module then responds to a data shipment.
Reporting: Parallel or Serial Polling. Request for Service (SRQ).
Address Assignment: Switch selectable per chassis. This system is programmable via
the GPIB
Bus Interface. Each system has its own selectable bus address. The amplitude of
each module is
individually controllable (programmable). Each module has one independently variable
ac voltage
output (amplitude) which is programmed in BCD with five digit resolution plus one
additional byte to
control the phase angle.
Connectors: MS type, located on rear panel.
Front Panel Configuration: Main Chassis: Power switch with indicator. Modules: Module Listening Indicator (MLA),
Service
Request Indicator (SRQ). The output of each module is constantly monitored. The
“SRQ” will be
flagged in the event of a failure within a module. On request, a status byte will
be placed on the bus,
indicating the specific location of the failed module. If an individual module should
fail, then the
analog section of that module will shut down; the digital section will continue
to operate. This gives
the control of the module to the system controller so that a retry or a restart
may be attempted. The
408A Modules are interchangeable between chassis slots as well as between instruments.
This
allows for interchangeability and expansion.
GENERAL
Power Requirements:
117Vac ±10%, 60Hz, 100 watts (with full compliment of modules).
Power Consumption per Module: 2.0 watts.
Available on Request: 230Vac, 50Hz.
Temperature Coefficient: 0.005%/°C.
Ambient Temperature: 20°C to 30°C.
Dimensions: 19" (48.3cm) wide, 15" (38.1cm) deep, 5.25" (13.3cm)
high.
Weight: Main frame with 8 modules, 23.5 lbs (10.6kg); single module,
7oz. (198.5gms).
Shipping, 29 lbs (13.12kg).
Certification: Certificate of Compliance traceable to US N.I.S.T.
Warranty: 1 year including parts and labor.
Extended 1 Year Warranty: Part No. EW408.
ORDERING INFORMATION
Model 408: Mainframe instrument
which includes; power supply and dc reference (P/N 408P),
microprocessor module (P/N 408M). <GPIB> included.
Module 408A: AC and dc voltage modules. Up to 8 modules may be
installed in the 408 Mainframe
instrument.
Accessory 408X: Panel cover for the unused slots.
Specifications and prices are subject to change without
notice.
Copyright ©
February 23, 2006 Krohn-Hite Corporation.
All rights reserved.
15 Jonathan Drive, Unit 4, Brockton, MA 02301-5566 U.S.A.
Tel: (508) 580-1660; Fax: (508) 583-8989; info@krohn-hite.com
