Model 3988 Op Manual.vp - Krohn-Hite Corporation

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Section 3 - IEEE-488 STD (GPIB) Programming LINE-TERMINATION-CHARACTER-SEQUENCE Line-Termination Character-Sequence Keyboard Entry a. None (EOI only) [0][SHIFT] [ALLCH] b. Carriage return (with EOI) [1][SHIFT] [ALLCH] c. Line Feed (with EOI) [2][SHIFT] [ALLCH] d. Carriage return followed by line feed (with EOI) [3][SHIFT] [ALLCH] e. Line feed followed by carriage return (with EOI) [4][SHIFT] [ALLCH] f. Display present LTCS [SHIFT] [ALL CH] 3.2.2 IEEE-488 Bus Interface Programming Connector The rear panel programming connector, labeled “IEEE-488 PORT” (Figure 3.1), is the standard bus interface connector as specified in the IEEE-488 STD. Figure 3.1 Rear Panel GPIB Connector 3-2
Section 3 - IEEE-488 STD (GPIB) Programming 3.3 ASCII DATA COMMANDS 3.3.1 Format The Model 3988 employs free-format software commands, allowing the user to program a specific function in several different ways. See Section 3.3.3. 3.3.2 Types Of Data Commands a. Commands fall into two types : Those involving numeric parameters and those that do not. Commands which involve numeric data contain (3) types of fields: 1. Numeric: Numeric fields may be floating point or scientific notation. 1 = 1.0 1.0 = 1.0 2.7E3 = 2.7 X 103 –2E3 = –2 X 103 2E–3 = 2 X 10–3 2. Multiplier: “KILO”, “MEGA”. 3. Parameter: Parameter (frequency, gain, channel, etc.) is included in Section 3.3.3. b. Delimiters which may separate commands are the following: (; : / \ .) c. Two consecutive character strings (i.e. parameter and multiplier) must have a space between them or they will be treated as one string. d. The Model 3988 uses an internal 32 character buffer for command processing. A line may be composed of multiple commands, separated by delimiters mentioned above. No commands are executed until the line is terminated with a line feed ASCII character (Hex 0A) or carriage return (Hex 0D) or by sending the end-or-identify (EOI) command with the last character. 3.3.3 Table Of ASCII Commands In this Section there are characters that are underlined and characters that are NOT underlined. The characters that are underlined MUST be sent for the command to be recognized properly. Any additional characters may be sent once all the underlined letters are sent. Commands are case sensitive; upper case characters MUST be used. 3-3
Page 1 and 2: Model 3988 Butterworth/Bessel 8-Pol
Page 3 and 4: Table of Contents TABLE OF CONTENTS
Page 5 and 6: Table of Contents Figure 1 - Model
Page 7 and 8: Section 1 - General Description SEC
Page 9 and 10: Section 1 - General Description DC
Page 11 and 12: Section 2 - Operation SECTION 2 OPE
Page 13 and 14: Section 2 - Operation GPIB Address
Page 15 and 16: Section 2 - Operation 2.5.3 DC Leve
Page 17 and 18: Section 2 - Operation 2.6.4 Phase R
Page 19: Section 3 - IEEE-488 STD (GPIB) Pro
Page 23 and 24: Section 3 - IEEE-488 STD (GPIB) Pro
Page 39: 3.6.3 Example 3 - National Instrume
Page 42 and 43: Section 4 - Incoming Acceptance Set
Page 44 and 45: Section 4 - Incoming Acceptance Fig
Page 46: Section 4 - Incoming Acceptance Thi

Model 3988 Op Manual.vp - Krohn-Hite Corporation

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