ADCMT 6253 - Output Status and Internal Setting Values

6253 DC Voltage Current Source/Monitor Operation Manual
4.2.4 Source Function
4-31
2. Suspend Function
Using this function can reduce unnecessary relay ON/OFF actions, which reduces deterioration of the
throughput due to relay operation time and improves the life spans of the relays.
Therefore, using the suspend function is recommended whenever turning OFF the output to change
the source conditions.
There are two Suspend statuses: HiZ (high resistance) and LoZ (low resistance).
The following table shows the output status and internal setting values.
3. Operational Descriptions
1. Standby status
Pressing the STBY key will switch to the Standby Status. The OPR key goes OFF.
The 6253 is surely isolated from the DUT.
2. HiZ Suspend status
Pressing the OPR key or the SHIFT + OPR keys will set Suspend status. The OPR key blinks.
This is the high-resistance status in which Vsus voltage is output with the OPR/STBY relay ON.
In this status, the DUT is rarely affected.
The 6253 operates as follows in the Operate status.
VS setting: Vsus → Current limit value setting→ VS output
IS setting: Vsus → IS function → IS output
3. LoZ Suspend status
LoZ Suspend status is the same as HiZ Suspend status except that the output status is low
resistance.
This status is effective in setting the DUT to low impedance status when the output is set to OFF.
The output response speed is faster because the limit values do not change in the Operate status.
VS setting: Vsus → VS output
IS setting: Vsus → IS function → IS output
4. Operate status
Pressing the OPR key will switch to the Operate status. The OPR key goes ON.
Table 4-8 Output Status and Internal Setting Values
Status at Output OFF Output relay Output status Setting current limit value
LoZ ON
Vsus, low
resistance
VS: Setting current limit values (IL)
IS: 10000 digits in the 3A range
3000 digits in other ranges
HiZ ON
Vsus, high
resistance
100 nA (3 A range)
STBY OFF Open -