Voltech ATi User Manual page 384

T T
ESTS AND EST
Test Conditions
The source and load resistors (RS and RL) are connected to the transformer -
this may be done automatically using the tester's OUT test. Then, two
measurements are performed using the circuits above, which the tester
automatically configures. First the test voltage Vin is applied as a common
mode signal and the output voltage Vout1 is recorded, and then the same Vin
is applied as a normal input voltage and the output Vout2 is recorded.
Longitudinal balance is calculated as the ratio:
V
IN1
V
IN2
Terminals (X)
Terminals (Y)
P 7-86
AGE
C
ONDITIONS
LBAL = 20 log
A
R
S
R
S
B
A
R
S
R
S
B
C
Energized (Vin)
A+B
(Vout2 / Vout1)
10
Hi Lo
A B
C
D
V
R
OUT1
L
E
D
V
R
OUT2
L
E
Measured (Vout)
Hi
D
D
V AT U
OLTECH I SER
Lo
E
E
M
ANUAL