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OMEGA Model CYD201/CYD208 User’s Manual
5-6 Service
5.7.2 A/D Converter Calibration
NOTE:
Current source calibration
must
be performed
before
A/D converter
calibration.
1. Allow 30 minute warm-up to achieve rated specifications.
2. Perform current source calibration.
3. Configure 125 k resistor as shown in Figure 5-4. Set Model 208s to
channel 1.
4. Wait 10 seconds for resistor voltage to settle.
5. Press
CAL ENABLE
, then within 2 seconds press
UNITS
. The display
window shows "-CAL-" for approximately 15 seconds.
6. Repeat procedure with 25 k resistor.
7. For Model CYD208, repeat procedure for other 7 channels. See
Figure 2-2 for pin assignments.
5.8 SERIAL INTERFACE CABLE AND ADAPTERS
123456
123456
BLACK
RED
GREEN
YELLOW
RxD
Gnd
Gnd
TxD
Figure 5-5. Model CYD200-J10 RJ-11 Cable Assembly Wiring Details
13121110987654321
25 24 23 22 21 20 19 18 17 16 15 14
= NOT
USED
654321
DB-25 CONNECTOR
RJ-11
RECEPTACLE
RxD
Gnd
TxD
Figure 5-6. Model CYD200-D RJ-11 to DB-25 Adapter Wiring Details