8250A Optical Power Meter Operation Manual
2. PANEL AND FUNCTION DESCRIPTION
2-1
2.
PANEL AND FUNCTION DESCRIPTION
2.1
Front Side
2.1.1
Function Description
Figure 2-1 Front View
See Figure 2-1 and Figure 2-2.
1. Display section
Displays the measurement value and other information.
2. POWER
Turns on or off the power.
3. ZERO
Acquires the offset value to cancel the offset which depends on
the optical sensor.
Press
[ZERO]
for 2 seconds after completely covering the optical
sensor.
The 8250A acquires the offset value while “ZERO” is displayed
for approximately 4 seconds, and returns to the normal measure-
ment mode. Press
[ZERO]
when turning on the power. If the sen-
sor is not completely covered, “Err 1” is displayed when
[ZERO]
is pressed and an over range occurs in any range. If “Err 1” is dis-
played, a measured value in a range, in which the over-range
occurs, is fixed as the over-value.
1
5
2
9
10 11
6
7
8
15
18
19
20
12
13
14
4
3
16
17
21
