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Basic Operation

Level rise slope 10us

Level fall slope 2us

Minimum time width

for low level keep

30us

The bi-direction I/O functions are introduced as below:

• Press [On/Off] on the instrument’s front panel, the instrument’s output is

changed from On to Off. At this point, the pulse signal output from pin 7 can

be detected.

• When the instrument’s [On/Off] is in Off state, input pulse signal to pin 7,

and it will not impact the [On/Off] state.

• When the instrument’s [On/Off] is in On state, input pulse signal to pin 7,

and [On/Off] will be changed from On to Off.

Taking two instruments as an example, the operation is as below:

1. Referring to the figure below, connect pin 7 of two instruments to the exter-

nal oscilloscope.

2. Set pin 7’s function of two instruments to Not-Invert and Sync-Off.

3. Confirm that the [On/Off] of both instruments is in On state.

4. Press [On/Off] on the front panel of instrument A to turn off the output

function.

At this time, check the oscilloscope. The instrument A’s pin 7 outputs pulse

signal and the instrument B’s output function is synchronously turned off.

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ITech IT-M3900C Series User Manual

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