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7. REMOTE CONTROL
This instrument can be remotely controlled (e.g., increments or decrements preset data) via
the REMOTE CONTROL connector.
(1) Major Function Increment, decrement, returning group top
(2) Connector 57LE-40240-7700 (DDK Ltd.) or equivalent
(3) Input Level TTL (Pull up to +3.3 V)
(4) Input Logic Negative logic
(5) Output Level TTL (GO/NO-GO), open collector (Alarm)
(6) Fan Out 1 each
(7) Output Voltage +12 V (Alarm)
(8) Output Logic Positive logic/negative logic (GO/NO-GO), negative logic (Alarm)
(9) Pin Assignments See Table 7-1
Table 7-1 Pin assignments
No. Name Input/Output No. Name Input/Output
1 INC Input 13 GO (Positive logic) Output
2 DEC Input 14 GO (Negative logic) Output
3 RETURN Input 15 NO-GO (Positive logic) Output
4 Reserve 16 NO-GO (Negative logic) Output
5 Reserve 17 Alarm Output
6 Reserve 18 N. C.
7 Reserve 19 N. C.
8 Reserve 20 N. C.
9 N. C. 21 N. C.
10 N. C. 22 N. C.
11 GND GND 23 GND GND
12 GND GND 24 GND GND
＊About REMOTE CONTROL connector
• Do not apply external voltage to the output pins except Alarm pin.
• All pins are pulled up to +3.3 V. When externally control this instrument, do not apply
voltage exceeding +5.0 V or negative voltages.
＊Recalling preset conditions via the REMOTE CONTROL connector
• The preset conditions between the Begin and End address can be recalled by using
the INC/DEC pins. The INC, DEC, and RETURN pins are Low active. Assert for at
least one second.
• After setting is performed, wait for at least one second for the next setting.
＊GO/NO-GO output pins
• Outputs TTL High or Low for GO/NO-GO judgement.
＊Alarm output pin
• Outputs OR of three types of alarms displayed on the top screen in negative logic.
Since the open collector output is used, pull up the circuit for connection.
＊Operation while using GPIB and Ethernet
• The REMOTE CONTROL connector is enabled even when operating the instrument
via the GPIB (in remote control mode) and Ethernet. When the REMOTE CONTROL
connector is not used, disconnect any equipment from the connector.
7-1