Tektronix LumaColor II J18, Instruction Manual

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J18 Photometer Instruction Manual 1–7
Functional Check
The J18 performs a self-test when first turned on. The self-test is
successfully completed under the following conditions:
H
A “fresh” battery must be installed, or the AC adapter must be
attached.
H
A recognized sensor head must be attached. (The J18 will not
recognize the J1820 sensor head.)
1. Cover the sensor to block out any light before turning on power
to the J18.
2. When power is initially turned on, the display reminds you to
cover the sensor; see Figure 1–4. If the sensor is uncovered, the
display flashes and the self-test does not continue.
Figure 1–4: Initial Power-On Display
NOTE
. If the photometer is turned on with the sensor uncovered,
cover the sensor and cycle the photometer power off and then on
again. This procedure ensures a complete photometer auto-zero.
J18 Photometer Instruction Manual 1–7
Functional Check
The J18 performs a self-test when first turned on. The self-test is
successfully completed under the following conditions:
H
A “fresh” battery must be installed, or the AC adapter must be
attached.
H
A recognized sensor head must be attached. (The J18 will not
recognize the J1820 sensor head.)
1. Cover the sensor to block out any light before turning on power
to the J18.
2. When power is initially turned on, the display reminds you to
cover the sensor; see Figure 1–4. If the sensor is uncovered, the
display flashes and the self-test does not continue.
Figure 1–4: Initial Power-On Display
NOTE
. If the photometer is turned on with the sensor uncovered,
cover the sensor and cycle the photometer power off and then on
again. This procedure ensures a complete photometer auto-zero.