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Model 3550 LCR Meter Instruction Manual Operating Instructions
Front Panel Description cont’d:
10 Remote Interface Status LEDs – “SRQ” “LTN” “TLK” “RMT”
These LEDs indicate the status of remote communications using the 3550’s standard RS-232C and
optional GPIB (IEEE-488.2) interfaces
All four annunciators are used for GPIB communications. If the RS-232C is the controller, then
only the "RMT" LED is used.
11 "PANEL" Selector Switch
Pressing the [0-9] key in the Panel section allows the user to select a preset panel setting from 0-
9. Each consequent press of the [0-9] key will increment to the next preset panel number. The
active instrument settings are automatically updated to the panel number indicated on the seven
segment LED (Panel Display LED). If the instrument settings are changed while a panel number
(0-9) is active and the panel key is pressed then the existing settings will be stored into the panel
location indicated by the Panel Display LED.
Only panels 1~9 can have comparator limit values assigned to them.
12 "PANEL" Display LED
The PANEL Display LED is a seven segment LED that displays the active panel setting.
Press the [0-9] key located in the Panel Section to increment through panel settings 0-9.
13 "DISPLAY A" Parameter Selection Key - [A]
Press this key to select the measurement parameter of DISPLAY A. Measurements of L, C, R, |Z|
and |Y| are available.
14 "DISPLAY A"
Measured values of L, C, R, |Z|, and |Y| are shown in this panel. The measurements values range
from 0000 to 19999 and are displayed with 4
1
/
2
- digit resolution. In addition, units of measure are
annunciated above and beside the display for reading convenience.
To change the parameters shown by DISPLAY A, press the [A] key located in the DISPLAY A-B
instrument panel until the desired measurements are shown.
15 "BIN" Display LED
The BIN Display LED is a seven segment LED that displays the active sorting bin number of the
Comparator. When the Comparator is ON, this LED displays which BIN Number the present
measurement is associated with. "1" through "9" are for OK products, while "0" is reserved for
defects such as open circuit conditions.
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