Glossary
A
ASIC
Application Specific Integrated Circuit
C
Calibration Adjust -
How to restore an instrument to perform in
ments
agreement with its specifications
CSA
Canadian Standards Association safety stan -
dard.
G
GaAs
A technique to make very fast IC's using
Gallium Arsenide substrate.
GPIB
General Purpose Instrumentation Bus used for
interconnecting several measuring instruments
to a common controller.
I
2
I
C-bus
An internal address- and data bus for communi -
cation between microcontroller, measuring
logic, and options.
IEC 1010-1
International Electrical Commission safety
standard.
L
LSI
Large Scale Integrated circuit
O
OCXO
Oven-Controlled X-tal Oscillator
P
PCA
Printed Circuit Assembly
PCB
Printed Circuit Board
Performance Check
A procedure to check that the instrument is
functionally operational and performs to its
specification. Must not require opening of cabi -
net. If the instrument passes the check it is con -
sidered as calibrate.
PWM
Pulse Width Modulation
T
TCXO
Temperature-Controlled X-tal Oscillator
9-4 Glossary