Tegam 3550 - Page 6

Model 3550 Programmable LCR Meter Instruction Manual
f
Table of Contents
V PROGRAMMING AND INTERFACING ................................................................5-1
Interfacing to the 3550 ........................................................................... 5-2
Control I/O Connector............................................................................. 5-2
Inputs ............................................................................................. 5-2
Figure 5.1 – Input Schematic .............................................................. 5-2
Outputs ........................................................................................... 5-3
Figure 5.2 – Output Schematic ............................................................ 5-3
Timing Diagrams............................................................................... 5-4
Figure 5.3a – Test Busy Operation ....................................................... 5-4
Figure 5.3b – Measure End Operation................................................... 5-4
Figure 5.3c – GO/NO-GO Operation ..................................................... 5-4
Table 5.1 – Connector Pin Designations ................................................ 5-5
Table 5.2 – Control I/O Function Summary ........................................... 5-6
Sample Diagram of External Connections to Sequencer........................... 5-7
RS-232C ............................................................................................... 5-8
Interface Cable ................................................................................. 5-8
Input Format .................................................................................... 5-8
Table 5.3a – Command Summary........................................................ 5-11
Table 5.3b – Command Summary cont’d .............................................. 5-12
Table 5.3c – Command Summary cont’d............................................... 5-13
Table 5.4 - Comparator Instructions..................................................... 5-14
Data Output Format for Measurement Settings ...................................... 5-15
Table 5.5a – Data Output Code Functions ............................................. 5-16
Table 5.5b – Data Output Code Functions cont’d .................................... 5-17
Monitor Output Format....................................................................... 5-18
Table 5.6c – Monitor Output Code Functions.......................................... 5-21
Table 5.6b – Monitor Output Code Functions cont’d ................................ 5-22
RS-232C Hardware and Computer Settings ........................................... 5-23
Sample Programs for RS-232C ............................................................ 5-23
The GPIB Interface (Optional) .................................................................. 5-28
General Description of GPIB................................................................ 5-28
Primary Specifications of GPIB ............................................................ 5-28
Table 5.7 – GPIB Functions................................................................. 5-28
Installation of the GPIB Board ............................................................. 5-29
Figure 5.4a – Rear View ..................................................................... 5-29
Figure 5.4b – Side View ..................................................................... 5-30
Figure 5.4c – Top View....................................................................... 5-30
Front Panel Status LEDs ..................................................................... 5-31
Local Key Switch ............................................................................... 5-31
GPIB Switches .................................................................................. 5-31
Delimiter Output Formats ................................................................... 5-31
Output Status Bits for Service Requests................................................ 5-31
Figure 5.5 – GPIB Status Bits.............................................................. 5-31
Additional Notes for Using the GPIB Interface ........................................ 5-31
Programming Examples...................................................................... 5-33