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Racal 2151 Counter
Manufacturer:
Model:
2151
Date:
1991
Class:
Type:
SubType:
VXI Counter

Information

1 The Racal Instruments VXlbus microwave Counter, Model 2151, is a microprocessor- controlled instrument offering high-accuracy measurements with a comprehensive range of facilities. These facilities include Automatic/Manual Operation, Tracking, Offset, Multiply, and Store and Recall. All the instrument’s functions are controlled remotely via the VXI Interface. 2 The Racal Instruments VXlbus UHF Counter, Model 2051 offers high accuracy measurement over a reduced frequency range, with a similar range of facilities to those provided on the Model 2151, MEASUREMENT FUNCTIONS Frequency A Function 3 The Frequency A Function is used to measure the frequency of the signal applied to INPUT A. A resolution of up to ten digits can be selected with a gate time of 1 millisecond to 20 seconds depending on the resolution selected. Frequency B Function 4 The Frequency B Function is used to measure the frequency of the signal applied to INPUT B. A resolution of up to ten digits can be selected with a gate time of 1 millisecond to 20 seconds depending on the resolution selected. Frequency C Function /2151 only) 5 The Frequency C Function is used to measure the frequency of the signal applied to INPUT C. A resolution of 0.1 Hz to 1 MHz can be selected with a gate time of 1 millisecond to 10 seconds depending on the resolution selected and frequency being sampled. Ratio C/B Function /2151 only) 6 The Ratio C/B Function is used to measure the ratio of the frequency applied to INPUT C to that applied to INPUT B. Ratio C/A Function /2151 only) 7 The Ratio C/A Function is used to measure the ratio of the frequency applied to INPUT C to that applied to INPUT A. Ratio B/A Function 8 The Ratio B/A Function is used to measure the ratio of the frequency applied to INPUT B to that applied to INPUT A.

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Service Manual
Manual type:
Service Manual
Pages:
66
Size:
578.33 Kbytes (592210 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
unknown
Quality:
Scanned document, all readable.
Upload date:
2015 10 10
MD5:
be2c3aa1dad39bae6c7982e79f615f42
Downloads:
1040

Information

TECHNICAL SPECIFICATION ... 1-1 GENERAL DESCRIPTION ... 2-1 INTRODUCTION ... 2-1 MEASUREMENT FUNCTIONS ... 2-1 Frequency A Function ... 2-1 Frequency B Function ... 2-1 Frequency C Function (2151 only) ... 2-1 Ratio C/B Function /2151 only) ... 2-1 Ratio C/A Function /2151 only) ... 2-1 Ratio B/A Function ... 2-1 CHECK FUNCTION ... 2-2 SIGNAL INPUT CHANNELS ... 2-2 ADDITIONAL FREQ C ACQUISITION MODES /2151 ONLY) ... 2-3 MATHS FUNCTIONS ... 2-3 SPECIAL FUNCTIONS ... 2-3 STORE/RECALL FUNCTIONS ... 2-3 SAMPLE RATE ... 2-3 ERROR INDICATION ... 2-4 HOLD FEATURE ... ... 2-4 RESOLUTION AND GATE TIME ... 2-4 EXTERNAL Frequency Standard INPUT ... 2-4 INITIALIZATION ... 2-4 VXI INTERFACE ... 2-5 PREPARATION FOR USE ... 3-1 UNPACKING ... 3-1 SETTING THE LOGICAL ADDRESS AND INTERRUPT PRIORITY SWITCHES ... 3-1 INSTALLATION ... 3-1 Connection to the VXI ... 3-1 FREQUENCY STANDARD ... 3-1 FUNCTIONAL CHECK ... 3-5 VXI Check ... 3-5 CHE CK Message Check ... 3-5 Data Output Check * ... 3-6 SRQ and Status Byte Check ... 3-6 Input Channel Function Checks ... 3-7 OPERATION VIA THE VXI ... 4*1 INTRODUCTION ... 4-1 DESCRIPTION OF FRONT PANEL CONNECTORS AND INDICATORS ... 4-1 DESCRIPTION OF SIDE PANEL SETTING CONTROLS ... 4-2 INITIAL SWITCH-ON ... 4-3 FREQUENCY MEASUREMENT- INPUT A ... 4-3 FREQUENCY MEASUREMENT - INPUT B ... 4-4 FREQUENCY MEASUREMENT - INPUT C /2151 ONLY) ... 4-4 Normal Automatic Mode ... 4-4 Manual Mode ... 4-5 Further Functions in FREQ C (Automatic Mode Only) ... 4-5 Set LOW FM (FREQ C) ... 4-5 Set TRACK (FREQ C) ... 4-6 RATIO MEASUREMENTS C/B /2151 ONLY), C/A /2151 ONLY) AND B/A ... 4-6 MEASUREMENT SAMPLE RATE ... 4-7 Setting and U sing the Sample Rate ... 4-7 Interrogating the Sample Rate ... 4-7 MULT FUNCTION ... 4-7 Setting the Multiplier ... 4-7 Enabling the Multiplier ... 4-7 Interrogating the Multiplier ... 4-7 OFFSET FUNCTION ... 4-8 Setting the Offset ... 4-8 Enabling the Offset ... 4-8 Interrogating the Offset ... 4-8 SMOOTH FUNCTION ... ... 4-8 CLK10 Frequency Standard ... 4-8 GATE TIME ... 4-9 SPECIAL FUNCTIONS ... 4-10 Setting the Special Function Register ... 4-11 Enabling and Disabling the Special Functions ... 4-11 ERROR CODES ... ... 4-12 Clearing the Error Codes ... 4-12 VXI OPERATING MODES ... 4-13 READING OUT DATA ... 4-13 CONTROLLING THE INSTRUMENT ... 4-13 DATA OUTPUT FORMAT-NORMAL ... ... 4-14 DATA OUTPUT FORMAT -.DUMP MODES ... 4-14 REQUESTING SERVICE ... 4-18 STATUS BYTE ... 4-18 SETTING THE ENABLE REGISTERS, ... 4-22 MESSAGE PROTOCOLAND SYNTAX ... 4-22 System Message Traffic ... 4-22 Program Messages ... 4-22 Response Messages ... 4-23 White Space Character ... 4-23 OVERLAPPED/SEQUENTIAL COMMANDS ... 4-23 COMMANDS ... 4-24

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