6146/6156 DC Voltage/Current Generators Operation Manual
4.2.5 Source Function
4-15
This status is available only in the 3 V or 30 V range.
3. LoZ Suspend status
LoZ Suspend status is the same as HiZ Suspend status except that the output status is low resis-
tance.
This status is effective in setting the load to low impedance status when the output is set to OFF.
4. Operate status
Pressing the OPR key sets Operate status.
The OPR indicator goes ON.
4. Setting Suspend conditions
Setting the output resistance in Suspend status
Set selecting MENU, SOURC and SUS Z in that order.
HiZ: High output resistance status
3 V or 30 V range: Current limiter of ±5 mA
LoZ: Low output resistance status
Ranges other than above: The statuses shown in Table 4-6 are applied regardless of
HiZ/LoZ.
4.2.5.6 Standby Mode
The 6146/6156 has two types of Standby depending on the OPR/STBY relay status.
The type of Standby is expressed as Standby mode and set selecting MENU, SOURC and SBY.MD, 0 or
1 in that order.
1. Mode 0
Mode 0 is normal standby status. All the OPR/STBY relays (SW1, SW2 and SW3) are OFF.
2. Mode 1
Only SW1 among the OPR/STBY relays is always ON. Other OPR/STBY relays are OFF. The inter-
nal circuit and the LO OUTPUT terminal are connected by a resistance of approximately 10 kΩ (R1).
Using this mode may decrease noise in Operate status.
The following figure shows an image of a grounded load. If there is a noise source between the ground of
the load and the ground of the 6146/6156, operating in the Standby mode 0 may cause noise current i
1
to
flow into the load through the ground the moment the OPR/STBY relays are connected. The Standby mode
1 is effective in preventing such interference.
As SW1 among the OPR/STBY relays is always ON in the Standby mode 1, induced voltage to V1 can be
reduced due to the effect of voltage dividing by the ground-to-ground capacitive impedance and the series
resistance (R1). Consequently, the noise current i
1
flowing to the load can be also reduced.
To Next Page
Loading...
Need help?
General
