Chroma 16502 - R SCAN Function; R SCAN Interface

R SCAN Function
9-1
9. R SCAN Function
Fan and Motor are combined by multiple groups of coils and should be inter-balanced
between coils or it may cause abnormal sound. Thus, test if the coils balance is needed. The
16502 provides R Scan Function plus R Scanner for customer test. For measurement more
accuracy, the customer can use it with temperature compensation function. R SCAN function
should be coordinated with purchased R SCANNER.
9.1 R Scan Interface
R SCAN interface is for an R SCANNER installed on output terminal of 16502 front panel. It is
connected and controlled with the 16502 via D-SUB 9Pin changing to Handler control line.
The diagram of 16502 Milliohm Meter, R Scanner and User Controller is shown below.
16502 MILLIOHM METER
16502 R SCANNER
D- S- S+ D+
D S
Handler Control Line
DUT
PIN1
D
USER Controller
S
DUT
PIN2
D S
Handler
DUT
PIN3
D S
DUT
PIN4
R2
R3
FAN / MOTOR Equivalent Circuit
P2
P1
P3
P4
R1