Ectron 441A, Instructions Manual, Page: 10 / 74

ABBREVIATIONS
Table 1-1 lists the abbreviations used throughout the manual.
Table 1-1
Abbreviations in This Manual
Symbol Meaning Typical use
ac Alternating current 120 V ac
A Ampere Power current = 150 mA
C Centigrade
50 ° C
dc Direct current 10.5 V dc to 32 V dc
°
Degree
50
°
C
f
co
Filter cutoff frequency f
co
= 100 Hz
f
in
Input frequency f
in
can be 1 Hz to 50 kHz
F Farad Input Impedance = … 300 pF …
f
U
Upper-frequency set point
Volts-per-hertz resolution =
V
U
−
V
L
f
U
−
f
L
f
L
Lower-frequency set point See f
U
g Gravitational force, gram
Shock resistance = 20 g
Weight = 270 g
Hz Hertz (cycles per second) f
in
can be 1 Hz to 50 kHz
k
Kilo (1 × 10
3
)
Maximum frequency = 50 kHz
M
Mega (1 × 10
6
)
Noise-measurement
bandwidth =
… 1 MHz
m Milli (1 × 10
− 3
), meter Width = 28.4 mm
Ω
Ohm
Output impedance = 1
Ω …
oz Ounce Weight = 9 oz, nominal
p Peak, pico (1 × 10
− 12
)
Input sensitivity ≥ 10 mV p
Input Impedance = … 300 pF …
p-p Peak to peak 20 V p-p output capability
s Second
Update rate = 1 ms …
V Volt or voltage 10 mV to 100 V input
V
U
Upper-voltage set point See f
U
V
L
Lower-voltage set point See f
U
″ Inch
Length = 4 ″
Description Model 441A
1-4