PA1001A – 7/02
Page 10 of 11
FOR CURRENT OUTPUT:
•
Connect a digital milliampmeter or equivalent, across the current output terminals.
•
On the PCA-121 select the “Coarse Range Adj” that corresponds to the maximum input
frequency. Refer to Table - 1 for selection options.
•
Adjust “4mA ADJ” control for desired “Zero” current (i.e. 4mA).
•
Inject the full-scale test frequency while adjusting “20mA ADJ” for current equal to SET (SPAN).
•
Iterate above steps until no change is observed.
FOR VOLTAGE OUTPUT:
NOTE: For proper adjustment of the voltage-output, First
Perform calibration of the current output.
•
Connect a digital voltmeter across the voltage output terminals.
•
On the PCA-121 select the “Coarse Range Adj” that corresponds to the maximum input
frequency. Refer to Table -1 for selection options.
•
Adjust
“V
O
ADJ” for 0.00 volts).
•
Inject the test frequency while adjusting “V
FS
ADJ” for voltage equal to SET (SPAN).
•
Iterate above steps until no change is observed.
Control and Adjustment Detail for the PCA-121
