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Figure 6-1. Front Panel (Model 6626A shown)
Pressing the ENTER key will enter the values displayed for the function indicated, initiate that function, and return the
display to the metering mode in which the measured output voltage and current for the selected output are displayed.
Pressing the ENTER key without entering numbers will result in retention of the previous values and return to the metering
mode. You can also return to the metering mode at anytime by pressing the RESET key.
The RANGE V/I key is used to display the voltage and current range settings. The key toggles; pressing it will display the
range, pressing it again will put the display back to background metering. The range display shows the largest values of
voltage and current that can be set for the ranges presently set.
The voltage step and current step (arrow keys) are used to change voltage & current settings and voltage & current ranges.
There are 3 modes:
1. To use the step keys to immediately change the output settings, the background metering mode must be in affect.
2. To use the step keys to change the setting, the VSET or ISET key must be pressed first. The step keys can then be used to
adjust the setting. Press the ENTER key to change the actual setting.
3. To use the step keys to change the voltage or current ranges first press the RANGE V/I key. The step keys change the
range as long as the RANGE display is in effect.
Note The step keys change the voltage or current by 1 LSB each time they are pressed. If the key is held down
more than 1 second, the automatic step mode goes into effect. The step rate will start to increase from the
initial value after about 3 seconds.
Setting Voltage and Voltage Range
The selected output’s voltage is programmed locally using the VSET key. For example, program the voltage to 5.25 volts
by pressing:
VSET 5 . 2 5 ENTER
The front panel display then indicates the actual output voltage and current for the selected output.
SYSTEM OUTPUT ENTRY
LINE
ON
OFF
LCL
ADDR
ERR
STO
RCL
RANGE
V/I
OVSET
RESET
OCP
VOLT
VOLT
CURR
CURR
OUTPUT
SELECT
VSET
ISET
OUTPUT
ON/OFF
ENTER
789
456
123
0.
VOLTS AMPS
6626A SYSTEM DC POWER SUPPLY
1 2 3 4 CV CC UNR OCP ERR RMT ADDR SRQ
ENBLD-- OUTPUT --
45.153 14.235m
OUTPUT
ANNUNCIATOR
CHANNEL 1
DISPLAY
LOCAL MODE
KEY
OUTPUT FUNCTION KEYS
SYSTEM FUNCTION KEYS NUMERIC ENTRY KEYS