3.3 I/O Terminals
CA5350
3-7
Input terminal (CURRENT INPUT)
Input terminal of
CA5350
is located at two places, the front panel and the rear panel.
Select and use either of them. You cannot use both input terminals simultaneously.
Turning on
ZERO CHECK
will disconnect the input connector (the selected one from
front and rear) from the internal amplifier. Use this when checking whether there is
input current or offset of
CA5350
itself.
CURRENT INPUT
CURRENT INPUT
R
F
ZERO
CHECK
≒20Ω
Figure 3-4 Input terminal
Method of select the input terminal
“3.6.4.1 Input select”
Remote command
“5.6 Description of individual command”, I Command
Output terminal (INVERTING OUTPUT)
Output terminal is provided in the front panel as well as the rear panel. Since output
impedance is 50Ω for each terminal (supplementary value), when load current is flowing,
the output voltage of each connector will differ even for the same output signal. Thus, it
is recommended to use only one of output terminals, and keep the other one open.
Maximum output current is ±10mA as the total of both front panel and rear panel
connectors.
INVERTING OUTPUT
INVERTING OUTPUT
50Ω
50Ω
Figure 3-5 Output terminal
When a current signal is input to the input terminal of
CA5350
, a negative voltage will
be output to the output terminal. And the output signal owns the opposite polarity of
the input.
INVERTING
OUTPUT
-
CURRENT
INPUT
R
F
i
+
-
↑
仮想接地
(電位≒0V)
Figure 3-6 Output polarity
Virtual grounding
(Electric potential
≒
0V)
