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50 Local Operation
Table 4-1. Controls and Indicators (continued)
Item Description
3 Electronic Load
Status
Annunicators
CC-Indicates the selected channel is in the constant current (CC) mode.
Note that Figure 4-1 illustrates that channel 1 is in the CC mode (CC annunciator is on).
CR-Indicates the selected input channel is in the constant resistance (CR) mode.
CV-Indicates the selected input channel is in the constant voltage (CV) mode.
Tran-Indicates that transient operation is enabled for the selected input channel.
Unr-Indicates that the selected input channel is unregulated (applies only in the CC mode and in
the middle and high ranges of the CR mode).
Prot-Indicates when channel protection features (CC, OV, OP, OT, etc.) are active on any
channel.
Err-Indicates that remote programming error(s) have occurred.
Shift-Indicates that the shift key, bottom key (blue) in SYSTEM group, was pressed.
4 GPIB Status
Annunicators
Rmt-Indicates that the Multiple Electronic Load is in the GPIB remote state. In the remote state,
the only front panel key that will function is the Local key.
Addr-Indicates that the Multiple Electronic Load is addressed to talk or to listen over the GPIB.
SRQ-Indicates that the Multiple Electronic Load is requesting service over the GPIB;
i.e., the service request line (SRQ) is active.
5 SYSTEM Keys
- Returns the Multiple Electronic Load from remote (computer) control to local (front
panel) control.
- Displays the Multiple Electronic Load’s GPIB address. You can change the address
using the numeric entry keys. You cannot query or change the address remotely (over the GPIB).
(shifted address key) - Displays error codes that resulted from remote programming.
- Used in conjunction with the ENTRY keys to recall the saved settings of all channels
from the specified location (Recall 0 through Recall 7). Recall 7 recalls the factory default
settings.
(shifted Recall key) - Used in conjunction with the ENTRY keys to save all of the present
settings (mode, current, resistance, voltage, etc.) of all channels in the specified register (SAVE 0
thru SAVE 6). The settings in locations 1 thru 6 will be lost when ac power is cycled. However,
SAVE 0 will cause the settings to be stored in non-volatile memory; and, the next time the
Multiple Electronic Load is turned on, these settings will become the power on settings.
(blue shift Key) - Activates shifted key functions (e.g., Error, Save, Slew, etc.). The Shift
annunciator goes on when this key is pressed.