Technical data

8 Service and Maintenance
Constant Current (CC) Verifications
196 E364xA User’s and Service Guide
3 Program the output voltage to the full- scale rated voltage
(8.0 V)
[1]
and the output current to 0 A by sending the
following commands:
VOLT 8 (E3640A model)
CURR 0
4 Divide the voltage drop (DVM reading) across the current
monitoring resistor (R
M
) by its resistance to convert to
amperes and record this value (I
O
). This value should be
within the limit of 0 A ± 10 mA. Also, note that the CC,
Adrs, Limit, and Rmt annunciators are turned on.
5 Read back the output current over the remote interface by
sending the MEAS:CURR? command.
6 Record the value displayed on the controller. This value
should be within the limit of I
O
± 5 mA.
7 Program the output current to the full- scale rated value
(3 A)
[1]
by sending the following command:
CURR 3.0 (E3640A model)
8 Divide the voltage drop (DVM reading) across the current
monitoring resistor (R
M
) by its resistance to convert to
amperes and record this value (I
O
). This value should be
within the following limits:
9 Read back the output current over the remote interface by
sending the MEAS:CURR? command.
10 Record the value displayed on the controller. This value
should be within the following limits:
[1] For the E3640A model. For other models, refer to Tabl e 8 -5 .
E3640A E3641A E3642A E3643A E3644A E3645A
3 A ± 16 mA 0.8 A ± 11.6 mA 5 A ± 20 mA 1.4 A ± 12.8 mA 8 A ± 26 mA 2.2 A ± 14.4 mA
E3640A E3641A E3642A E3643A E3644A E3645A
I
O
± 9.5 mA I
O
± 6.2 mA I
O
± 12.5 mA I
O
± 7.1 mA I
O
± 17 mA I
O
± 8.3 mA