Racal Instruments 9057 User manual

9057 & 9059
Frequency Period Meter
Technical Manual
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23
rd May 2018

9057 &9059
Frequency-PeriodMeters
Racal Instruments Limited Duke Street, Windsor, Berks,
Prepared by Technical Publications, Racal Group Services Limited.
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SECTION 1
SECTION 2
CHAPTER 1
CHAPTER 2
CHAPTER 3
CHAPTER 4
CHAPTER 5
9057/9059
f£)="f:T~~J~ =LJ~T=
FRONTISPIECE
TECHNICAL SPECIFICATION
OPERATION AND MA.INTENANCE
GENERAL DESCRIPTION
PRE PARA Tl ON FOR USE
lv'cins Pack Operation
Battery
Pack Operation
Fuselink Data
Removing the Case
Self Check
OPERATING INSTRUCTIONS
Front Panel Controls
Front Panel
Inputs
Rear Panel Components
OPERA Tl NG PROCEDURES
General Information
Frequency Measurement
Period Measurement
Overspill
PRINCIPLES OF OPERATION
General
Frequency i\iteasurement
Self Check
Period Measurement
TECHNICAL DESCRIPTION
Introduction
Attenuator
Assembly 19-0620
Amplifier and Pre-scaler
Assembly 19-0604
Control
Assembly 19-0608
Internal/External Frequency Standard
Internal/External Selection
Frequency Standard Division
Function Selection
Time Base
Time Base Selection
Input Attenuator
Assembly 19-0662
Page
1-1
2-1
2-1
2-1
2-2
2-2
3-1
3-2
3-2
3-3
3-3
3-3
3-3
4-1
4-1
4-2
4-2
5-1
5-1
5-1
5-2
5-2
5-2
5-2
5-3
5-3
5-4
5-4
Contents (1)
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CHAPTER 6
' ' '
TABLE 1
2
3
4
Fig.
2.1
Fig. 2.2
Fig. 2.3
Fig. 2.4
Fig. 2.5
SECTION 3
9057/9059
Page
Amplifier and High Speed Decade Assembly 19-0605
5-5
Check Signal 5-5
Auxiliary -6.2V Supply 5-5
Automatic Cut-out 5-6
Gating Control 5-6
Sampling Rate 5-7
NtanuaI Reset 5-7
Readout Assembly 11-0754 5-7
Overflow Indication 5-8
Frequency Standard 5-8
Power Supplies 5-8
Ntains Pack Operation 5-8
Battery Pack Operation 5-1 0
MAINTENANCE
List of Test Equipment Required
Use of Test Equipment
Power Supply Checks
Ntains (A.C
.) Powered Instruments
Battery Powered Instruments
Performance Tests
Setting
Up Internal Frequency Standard
External Frequency Standard Input
Attenuator Checks
Sensitivity Check
Setting
Up Schmitt Trigger
Amplifier and
Pre-scaler Assembly 19-0604
Miscellaneous Servicing Information
LIST OF TABLES IN SECTION 2
Self Check (Frequency) Displays
Self Check (Period) Displays
9057 and 9059 Channel A Sensitivity Check
9059 Channel BSensitivity Check
LIST OF ILLUSTRATIONS IN SECTION 2
Simplified Block Diagram Type 9057/9059
Function Selection Logic
Counting Decade Waveforms
Service View: Chassis Upperside }
Service View: Chassis Underside
at the end
of Chapter 6
OPTIONS
AND SUPPLEMENTARY INFORMATION
Information will
be included when required.
6-1
6-1
6-2
6-2
6-2
6-3
6-3
6-4
6-4
6-5
6-7
6-8
6-8
2-2
2-3
6-6
6-7
4-3
5-5
5-10
Contents (2)
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SECTION 4
Fig.4. 1
Fig.
4.2
Fig. 4. 3
Fig.4.4
Fig.4.5
Fig.4. 6
Fig.4.7
Fig.4.8
Fig.4. 9
Fig.4.10
Fig.4.11
Fig.4.12
Fig.4.13
Fig.4.14
Fig. 4. 15
SECTION 5
9057/9059
PARTS LISTS, CIRCUIT DIAGRAMS AND LAYOUTS
Parts List
Circuit and Layout: Attenuator Assembly
Parts List
Layout: Amplifier and
Pre-Scaler Assembly
Circuit: Amplifier and
Pre-Scaler Assembly
Parts List
Layout: Control Assembly
Circuit: Control Assembly
Parts List
Circuit and Layout: Input Attenuator
Parts List
Layout: Amplifier and High Speed Decade
Circuit: Amplifier and High Speed Decade
Parts List
Layout: Readout Assembly
Circuit: Readout Assembly
Parts List: Mains Pack Assembly
Layout: Power Supply Board
Circuit: Mains Pack Assembly
Parts List: Battery Pack Assembly
Layout: Charge Regulator Assembly
Circuit: Battery Pack Assembly
Parts List: Chassis Assembly
Interconnections: Module 9057 & 9059
APPENDICES AND CHANGE INFORMATION
19-0620
19-0604
19-0608
19-0662
19-0605
11-0754
11-0758
19-0664
11-0758
11-0759
19-0665
11-0759
Contents (3)
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SECTION 1
=========
TECHNICAL SPECIFICATION
==========================
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NOTE: The data applies to both models except where indicated otherwise.
1. 1 FREQUENCY RANGE
Model 9057:
Model 9059:
1.2 SIGNAL INPUT
1OHz -80MHz directly gated.
10Hz- 80MHz Channel 1A' directly gated .
40MHz -
56 0M Hz Channe I Is· prescal ed by. 1 0.
Model 9057 and Model 9059 Channel •A•
Sensitivity:
Better than lOmY
Impedance:
1 MOin parallel with 25 pF. a .c. coupled.
Signal Conditions: 9057 and 9059 Channel 1A'
Sensitivity Switch
Setting
Signal Range
(volts
r.m.s.)
Maximum input
before damage
(volts r.m. s .)
D. C. Dam u ge Overload
Connection:
Model 9059 Channel Is·
Sensitivity:
Impedance:
9057/9059
0.01
0. 1
0.01 -lOY
0.1 - lOOY
250Y below 100kHz 250Y below 1OOkHz
Derate to lOY at Derate to lOOY at
80MHz 80MHz
400Y
D.C.
B. N.C. connector, front panel.
Better than lOmY to 500MHz
falling to 50mY at 560MHz:
500nominal
Tech. Spec. (1)
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Signal Conditions: Channel 'B' (9059)
Sensitivity Switch
Setting
0.01
0.1
Signal Range 0.01 - 0.5V
0.1 -4V
Ma?<imum input
before damage
5V
5V
(volts r.m.s.}
D.C. Damage Overload 50V D.C.
1.3 FREQUENCY MEASUREMENT
Frequency Range:
Accuracy:
Gate Times:
Self Check:
1.4
PERIOD MEASUREMENT
Range:
Periods
Averaged:
Clock Units:
Self Check:
1 .5. TIME BASE
Frequency Standard
Warm-up Time
9057/9059
Refer to 1. 1
± 1 count± timebase accuracy.
10ms1 lOOms. ls and lOs.
Internal 100kHz signal. (Does not operate on
Channel 'B' of the 9059).
NOTE: On the 9059 the signal will be applied
to Channel 'A'.
10Hz to 3 MHz
1
I 10I 100 Or 1I 000
10 f-'S
Internal 100kHz signal.
5 MHz Crystal Oscillator model 9440or 9441 with
proportional temperature control.
Typicclly 2 minutes for an accuracy of 1 part
in 10 and 4 minutes for an accuracy of 1 ·
part in 107.
Tech. Spec. (2)
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r
Ageing Rate
Temperature Performance
1
.6 EXTERNAL STANDARD INPUT
Frequency
Minimum
level
Maximum level
1.7 DISPLAY
Format
latch
Reset
Overflow
1 .8 POWER SUPPLY
Better than 1
part in 108 per day on delivery,
and typi~ally better than 5 parts in 109 per
day after 1 months operation.
Better than 1 part in 108 per
0(
average over
0
the range -10 to 45 C.
1MHz
100mV
r.m.s. in 1 kOcapacitively coupled.
1 OV r .m .s. 100 V d. c.
Six digit in-line solid state numerical indicators
plus
overflow. Decimal point automatically
positioned.
Previous measurement is displayed during period
required to
complete new measurement. Display
is
automatically up-dated at the end of each
measurement.
Operation of the Reset push-button resets the
display to zero and the instrument is then ready
to commence new measurement.
Overflow lamp lights if display reading exceeds
999999.
NOTE: The Battery Power Pack and A .C. Power Pack are offered as sep<9rate
options One is necessary to operate the instrument.
Battery
Operation
Power Source
Fixing
Batteries
Operating Time
9057/9059
Option 07-lbttery Pack incorporating built-in
charger.;
Clamped to rear of counter by two finger-
tightened screws.
Eight re-chargeable nickel-cadmium •D• size
cells.
Approximately 5 hours at 25°C from fully
charged condition.
Tech. Spec. (3)
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