Radcal Dynalyzer III User manual

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USER GUIDE
DYNALYZER
OPERATION MANUAL
Dynalyzer III Digital Display/Printer

Warranty for the Model M-96320 Dynalyzer Digital Display Unit
Radcal Corporation warrants that, in the event that any defects in material or workmanship should
develop within one year of the date of shipment, the company assumes full responsibility for
servicing equipment of its manufacture without charge upon return of the equipment to Radcal,
with shipping costs prepaid by the customer. Costs to return-ship by ground to customers will be
paid by Radcal if the repairs are warranty-applicable.
Radcal shall not be held liable for damages or delays caused by defects beyond making repairs or
furnishing replacement parts, not shall Radcal be liable for any defective material replaced without
Radcal’s consent during the period of this warranty. Radcal reserves the right to perform warranty
services at its own factory.
Non-Warranty Repairs
The calibration of this instrument was correct within specified limits when the instrument left our
factory. Radcal cannot be responsible for injury or damage resulting from improper use or
calibration errors which develop subsequent to our shipment of the instrument.
If Radcal determines that a fault has been caused by misuse, abnormal operating conditions, or
repairs by unauthorized personnel during the warranty period, repairs and shipping costs will be
billed at normal rates.
If the equipment is found to be in proper working condition, Radcal will return-ship the equipment
at customer expense.
Radcal Corporation
426 West Duarte Road
Monrovia, CA 91016-4591 USA
USA [phone]
Fax USA [phone]
email sales@radcal.,com
www.radcal.com
Radcal Part # MNL/S-3669
4078220 Rev:B2
Printed: JUN 2015
Copyright© 2009, 2011

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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Contents
Important ..............................................................................................................................................................2
Introduction..........................................................................................................................................................2
Description.........................................................................................................................................................2
Construction ......................................................................................................................................................3
Measured Quantities.....................................................................................................................................3
Predicted Maximum mAs Reading Inaccuracy for Selected Exposure Times .............................................6
Calculated Quantities....................................................................................................................................6
Operation..............................................................................................................................................................8
Operation..............................................................................................................................................................9
Specifications ....................................................................................................................................................9
Printer............................................................................................................................................................9
RS-23-2 Connector.......................................................................................................................................9
Initial Setup and Self Test .................................................................................................................................9
Triggering Sources..........................................................................................................................................10
External Trigger...........................................................................................................................................11
Auto Trigger ................................................................................................................................................11
Manual Trigger............................................................................................................................................11
KV and MA Trigger Mode Operation ..........................................................................................................11
Trigger Level ...................................................................................................................................................12
kV Measurement Delay...................................................................................................................................15
Fluoroscopic Current Measurements (0-20 mA).............................................................................................16
Window Delay Mode Operation.......................................................................................................................16
Exposure Number Window and Recall Button................................................................................................18
Clear Reading .................................................................................................................................................18
Reset...............................................................................................................................................................18
Coefficient of Variation Measurement.............................................................................................................18
Applications .......................................................................................................................................................20
Typical Operating Sequence...........................................................................................................................20
Recommended Procedure for Verification of X-ray Equipment Calibration....................................................21
X-Ray Tube KVP (A + C), Transformer Balance A & C, and Exposure Timer Verification........................21
X-ray Tube Milliampere Station Verification................................................................................................21
Grid Pulse System Measurement ...................................................................................................................21
Printer .................................................................................................................................................................23
Loading Paper into the Printer.........................................................................................................................23
Changing the Printer Ribbon...........................................................................................................................23
Output Port.........................................................................................................................................................24
RS232 Port Settings........................................................................................................................................24

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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Important
READ THIS MANUAL
Serious measurement errors may result from improper use of this equipment or improper
interpretation of readings.
Introduction
As an element of the Dynalyzer system, the Digital Display embodies a wide range of x-ray
measurement features for rapid calibration, compliance testing, and troubleshooting. When used
with the Dynalyzer II or III High Voltage Unit, conventional oscilloscope and voltmeter, complete
analysis of the system under test is possible. It provides:
•Expanded versatility, more exposure data and compliance testing capability and faster,
easier data interpretation
•Automatic exposure calculations, decreasing manual computational errors
•Greater data accuracy (traceable to the US National Bureau of Standards)
•Stored data in the temporary digital display memory for statistical measurements and data
recall
•Data recorded in hard copy form for permanent record purposes with the integral printer.
The measurement features include:
•kVp (anode, cathode, and anode + cathode)
•mA and mAs
•Exposure time
•Standby and boosted filament current
•Coefficient of variation calculations for kV, mA, and time for up to 10 exposures
•Fixed window (sampling period) with an adjustable delay, for analyzing waveforms in
equipment such as falling load types of generators and automatic filament/mA control
systems
•Storage and recall capability of exposure data for as many as 10 consecutive exposures
Description
A microprocessor-based circuit controls all functions – from exposure measurements to data recall.
Troubleshooting is simplified by the inclusion of self-diagnostic tests for locating circuit
malfunctions.
Two digitally processed and displayed trigger modes are available:
•Percent – Selects a percentage of a reference level (previous exposure) for kVp and mA
•Preset – Selects an absolute value of kVp, mA, or an external source
The preset mode obviates the need for making a reference exposure and resetting the trigger
between exposures, regardless of the time elapsed.
Technique factors are stored in the memory of the digital display unit for up to the last 10
consecutive exposures, any of which can be sequentially recalled. Coefficient of variation
calculations are made automatically and can be instantly displayed on the front panel.

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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Construction
A louvered aluminum cover with a luggage type handle encloses a rugged, yet lightweight
aluminum chassis. Four 4-digit LED displays show all x-ray parameters in a clear logical
arrangement and are protected, along with the front panel controls, by an extension of the cover.
The rear panel contains a selectable line voltage cable receptacle, bulkhead receptacles for
connection to the Dynalyzer II or III High Voltage Unit and BNC connectors for an auxiliary
oscilloscope. Modular construction is used throughout.
The following specifications refer to the measurement accuracy of signals provided at the Digital
Display input and may add to or subtract from inaccuracies in the Dynalyzer H.V.U.
Errors, in absolute terms, would typically be less than 50% of the worst case values stated. Errors
(from one measurement to another) would typically be less than 25% of the worst case values
stated.
Interface Requirements:
Compatible with both Dynalyzer II and III High Voltage Unit.
Measured Quantities
(See note 1)
kVp (peak kilovoltage)
Anode to Cathode 20 to 150 kVp ± (0.75 kV + 0.5% of reading)
Anode Only 20 to 82.5 kVp ± (0.6 kV + 0.5% of reading)
Cathode Only 20 to 82.5 kVp ± (0.6 kV + 0.5% of reading)
Internal Resolution .03125 kV (
1
/32 kV)
msec (exposure time) 0.7 to 9999 msec ± (0.25 msec + 0.5% of
reading) See notes 2 and 3.
Internal Resolution 1 microsecond
Filament Amps 0-20 Amps rms ± (0.05A + 0.7% of reading)
See note 5.
Internal Resolution 1.25 mA
Frequency Response Within 1% of 60 Hz value where frequency <
100 KHz and filament current value > 2 amps
mAs – Normal Mode (millamperes x
seconds)
Range 0.1 to 2621 mAs ± (0.1 mAs + 0.6% of reading
+ 1 mAs per second of exposure) See notes 2
and 5.
Internal Resolution 0.04 mAs
Frequency Response > 1KHz
mAs – Fluoro Mode (milliamperes x
seconds)
Range 0.01 to 131 mAs ± (0.1 mAs + 0.6% of reading
+ 0.1 mAs per second of exposure) See notes
2, 3, and 5.
Internal Resolution 0.002 mAs

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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Figure 1: Typical Dynalyzer III System

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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75VA MAX 2A
120V 1A 240V
120/240 VAC 50/60 HZ
901 10,000 VDC OUT-VCO U22 ANLG BD.
902 BCKGRND RADIATION ABOVE 1mR/Sec
904 % TRIGGER SELECTED IN EXT. MODE
905 10,000 VDC OUT U5,U12, OR U7 ANLG BD.
906 10,000 VDC OUT U13 OR U6 ANLG BD.
907 EXPOSURE TIME EXCEEDS 999mSec.
909 LESS THAN 10EXP'S USED FOR STAT. AN.
ERROR CODES
000 SYSTEM O.K.
903 BACKGROUND RADIATION ZERO
908 mAS LIMIT EXCEEDED
DATAOUT
MA
A + C
KV
H-V UNIT
EXT TRIG
EXT TRIG
WARNING
DISCONNECT FROM MAIN POWER
BEFORE SERVICING
Input Power Connector - Allow rapid
fuse charging and line voltage
changeover (120/240 VAC)
+5V regulation
pass transistor
High Voltage Unit Interconnect
Socket - Accepts cable from
Dynalyzer II or Dynalyzer III High
Voltage Unit
External Trigger BNC Connector - See
SPECIFICATIONS
A + C Kv Connector Scope input;
internally summed to eliminate
need for differantial scope input
MA BNC Connector - Scope input;
allows viewing of anode current
Figure 2: Outline Data
Figure 3: Rear Panel Description
R
9.88 REF
[251]
15.63 REF
[397]
16.57 REF
[421]
7.56 REF
[192] 6.88 REF
[175]
11.63 REF
[295]
dimension in inches [mm]

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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Predicted Maximum mAs Reading Inaccuracy for Selected Exposure Times
RAD Mode (1 mV/mA as selected at High Voltage Unit)
Exposure Time
Displayed
(msec)
mAs Displayed
10 100 500 1,000 2,621*
10 ± 0.17 ± 0.71 ± 3.1 ± 6.1 ± 15.8
100 ± 0.26 ± 0.80 ± 3.2 ± 6.2 ± 15.9
1,000 ± 1.16 ± 1.7 ± 4.1 ± 7.1 ± 16.8
9,999 ± 10.16** ± 10.7 ± 13.1 ± 16.1 ± 25.8
FLUORO Mode (20 mV/mA as selected at High Voltage Unit)
Exposure Time
Displayed
(msec)
mAs Displayed
0.4 2 10 50 131*
10 ± 0.10 ± 0.11 ± 0.16 ± 0.40 ± 0.89
100 ± 0.11 ± 0.12 ± 0.17 ± 0.41 ± 0.90
1,000 ± 0.20** ± 0.21 ± 0.26 ± 0.50 ± 0.99
9,998 ± 1.10** ± 1.11** ± 1.16 ± 1.40 ± 1.89
*Maximum measurable value of mAs.
** Not recommended; usefulness limited by inaccuracy.
Calculated Quantities
The following values are calculated from some combination of the measured quantities. The
accuracy of a particular reading must therefore be determined by calculating the possible error in
the two measured quantities and combining these errors. Note that a large final error can occur
when either of the measured quantities is very small.
mA (average anode current)
Radiographic mode 0.1 to 9999 mA (See note 5.)
Fluoro mode 0.01 to 500 mA (See notes 3
and 5.)
Triggering Percent (2 to 100%) Preset
kVp Trigger Level
Range (actual) 2.4 to 200 kV 4 to 200
Increment 0.4 kV 0.4 kV
Accuracy ± (2% + 0.4 kV) ± (1% + 0.4 kV)
mA Trigger Level (Normal Mode)
Range (actual) 40 to 9999 mA 40 to 999 mA
Increment 40 mA 40 mA
Accuracy ± (2% + 40 mA) ± (1% + 40 mA)
mA Trigger Level (Fluoro Mode)
Range (actual) ± 2 to 500 mA 2 to 500 mA
Increment 2 mA 2 mA
Accuracy ± (2% + 2 mA) ± (1% + 2 mA)
External Trigger Level
Range (actual) Not allowed (error code 904) 3.0 to 10.0 volts
Increment 0.1 volts
Accuracy ± (0.3 + 5%)
Rise of fall time lag, max 150 usec
Input impedance 1K Ohm
Auto Trigger Update Rate Approximately once per second, 0.75 second sample time

Dynalyzer – Digital Display/Printer OPERATION MANUAL
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Auxiliary Functions (coefficient
of Variation Sample number) 10 consecutive exposures
Delay Ranges
kV delay 0-20 milliseconds
Window delay 20-999 milliseconds
Window width (sampling time) 20 milliseconds
Input Power Requirements
Built-in printer 104-125 VAC, 50/60 Hz @ 76 watts
208-240 VAC, 50/60 Hz @ 76 watts
Without printer 104-125 VAC, 50/60 Hz @ 40 watts
208-240 VAC, 50/60 Hz @ 40 watts
Fuse 2 Amp SB for 120 V power
1 AMP SB for 240 V power
Operating Temperature Range 0-50°C (32-122°F)
Storage Temperature Range 0-70°C (32-158°F)
Operating Relative Humidity 90% @ 40°C (104°F)
Storage Relative Humidity 95% @ 60°C (140°F)
Dimensions See Outline Data
Weight (approximate)
With printer 22 lbs (10 kg)
Without printer 18.5 lbs (8.4 kg)
Notes:
1. Due to cable capacitance, mA and A+C kV readings taken from the rear panel BNC
connectors may be degraded from the readings taken from the equivalent connectors
on the High Voltage Unit by the following amounts:
omA by ± (5 mV. + 1%)
okV by ± (10 mV. + 1%)
2. mAs and exposure time are measured du ring the period that the trigger signal is
above the trigger threshold. Therefore, the waveshape of the trigger signal and the
value of the trigger threshold can profoundly affect these measurements.
3. The low mA (Fluoro range) is selectable at the Dynalyzer III HVU. With this range
selected, the normal scale factor (1 mA = 1 mV) is multiplied by 20 (1 mA = 20 mV).
4. Requires minimum 65 msec exposure for rated accuracy.
5. Use of the “Fluoro” mode is strongly recommended when working with mA values
under 20 mA.