Ectron 441A, Instructions Manual, Page: 16 / 74

Table 2-2
Front-panel Screens
Screen
Function
Operate
Default screen; input frequency (f
in
) and pulses per
revolution are displayed.
f
U
and f
L
set points Select f
U
and f
L
between 0 Hz and 50 kHz.
V
U
and V
L
set points Select V
U
and V
L
between − 10 V and + 10 V.
Pulses/revolution
Select pulses per revolution for input signal less than 1
kHz to eliminate periodic error. This function can be
turned OFF and ON.
Input sensitivity
Select input-voltage sensitivity of MIN (200 mV peak),
MID (25 mV p), MAX (10 mV p).
Input bandwidth
Select input bandwidth of MIN (10 Hz),
MID (500 Hz), MAX (WB).
Output filter
Select output-filter frequency of 1 Hz, 10 Hz, 100 Hz, or
WB.
Calibration
Select calibration frequency between 1 Hz and 50 kHz
and turn calibration ON or OFF.
Viewing angle Set screen for best visibility.
Alignment, − 10 V
Alignment between internal analog
and digital components.
Alignment,
+
10 V
Memory error Appears only when there is a memory error.
Alignment required Appears only when alignment is required.
Reset
Allow user to reset all parameters
to the default settings.
Reset (momentary) Appears for one second after a reset.
Specifications Model 441A
2-6