Colorado Data Systems 53A-571 User manual
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53A-571 SYNCHRO/DIGITAL CARD
OPERATING MANUAL
0Copyright 1989 by
Colorado Data Systems, Inc.
ASubsidiary of Tektronix
Englewood, CO 80110
All rights reserved.
Printed in U.S.A.
•05/09/90 8505-01-A
through
9007-03-B
•
WARRANTY
•
•
Colorado Data Systems, Inc. (CDS) products (hardware and firmware) are warranted against
defects in materials and workmanship, and are warranted to meet the performance
specifications as listed in the current catalog and/or data sheet for the specific product being
warranted. This warranty applies for three (3) years following the date of shipment. CDS will,
at its option, repair or replace, at no cost to the customer, products which prove to be defective
during the warranty period, provided the defect or failure is not due to misuse or abuse of the
product. The customer is responsible for shipment of the defective product to the CDS factory.
Software products are supplied on a site license basis subject to the same performance warranty
provisions; the materials and distribution provision applies to the distribution media only. NO
OTHER WARRANTY IS EXPRESSED OR IMPLIED, INCLUDING WARRANTY FOR
FITNESS OF PURPOSE. CDS SHALL, IN NO CASE, BE LIABLE FOR CONSEQUENTIAL
DAMAGES.
•
•
•
53A-571 SYNCHRO/DIGITAL CARD
OPERATING MANUAL
DESCRIPTION 1
CONTROLS AND INDICATORS
Address Select Switch 1
Power LED 1
Fuses 1
Quadrant LEDs 1
Front Edge Connector Inputs And Outputs 2
SPECIFICATIONS 4
OPERATION
Overview 6
Card Commands 6
INSTALLATION 9
APPENDIX A
53/63 SERIES SYSTEM COMMANDS 10
APPENDIX B
FRONT EDGE CONNECTOR PIN ASSIGNMENTS 11
•
QD1 0.00000 —8 9.999 9°
QD2 90.0000° —17 9.9999 0
QD3 180.00000 —269.9999°
QD4 270.0000° —359.9999°
53A-571 SYNCHRO/DIGITAL CARD
DESCRIPTION
The 53A-571 Synchro/Digital Card is a printed circuit board assembly for use in a CDS 53/63
Series System. The 53A-571 Card consists of one or two independent 16 bit synchro/digital
converter channels. The second channel is included when Option 001 to the 53A-571 Card is
ordered. When the 53/63 system controller requests input from either channel, a 6-digit decimal
number preceded by a period is returned. For the channel selected, this number (0.000000 -
0.999999) represents the incoming 3-wire synchro-angle as a fraction of 360°.
CONTROLS AND INDICATORS
The following controls and indicators are provided to select and display the functions of the
53A-571 Card's operating environment.
Address Select Switch
The 53A-571 Card has a miniature 10-position switch which selects the card's address (0-9) in
the 53/63 Series System. Open the switch's cover and use a screwdriver with a narrow, flat
blade to turn the cam-action wiper to the desired position.
Power LED
The Power LED provides a valuable diagnostic tool by giving the system programmer a visual
indication of the action which the system is currently taking. Whenever the 53A-571 Card is
addressed by the system controller, the Power LED goes out. The LED remains out until
another function card is addressed. Since only one function card can be addressed at a time,
an unlit Power LED indicates the function card with which the system controller is currently
communicating. The Power LED being lit not only indicates that the 53A-571 Card is
unaddressed, but that all required dc power (5V dc, +15V dc) is being supplied.
Fuses
The 5V dc, and +15V dc power buses each have a fuse that protects the system from overloads.
If a fuse has blown, the Power LED will not light.
Quadrant LEDs
Each channel has four quadrant LEDs, "QD1", "QD2", "QD3", and "QD4". The quadrant LEDs
for a channel indicate the quadrant of the last angle read from that channel. When the 53/63
Series System powers up, the quadrant LEDs are unlit. They remain unlit until a channel
571 - 1
Front Edge Connector Inputs And Outputs
•Svnchro Analog Inputs
Each channel has three synchro-analog inputs for inputting the angular value in synchro
format.
AC Reference Inputs
Each channel has an independent AC reference input (Ref HI and Ref LO) that provides
areference frequency for the 53A-571 that is equal to the frequency of the
synchro-analog inputs.
The polarity conventions for the synchro analog inputs and AC reference inputs are as
follows. Si, S2, and S3 are the synchro-analog inputs; RHI and RLO are the AC reference
inputs, high and low, respectively. 6 represents the position of the synchro shaft.
S3-SI = (RHI-RLO) sin 8
S2-S3 = (RHI-RL0) sin (8 +120°)
S1-S2 = (RHI-RL0) sin + 240°)
S3-S1 will be in phase with RH,-RLo when sin 6 is positive, and 180 degrees out of phase
with RH,-RL0 when sin 8 is negative.
S2-S3 will be in phase with RH,-RL0 when sin (0 + 120°) is positive, and 180 degrees out
of phase with R„,-RL0 when sin (8+ 120°) is negative.
S1-S2 will be in phase with RH,-RLO when sin (6+ 240°) is positive, and 180 degrees out
of phase with R,,,-RL0 when sin (8+ 240°) is negative.
DC Reference Out
The DC reference voltage output (+7.5V DC nominal) is used as the reference voltage
with respect to which the Error Out signal and the Velocity Out signal are measured.
CAUTION:
DC Reference Out should not be tied to ground.
Error Out
The Error Out signal, one line for each channel, is the filtered AC voltage measured by
sin (0 - 41). 8 is the actual synchro input angle, and (I) is the 16-bit digital angle
representing the current S/D converter output. A difference between angle 8 and angle
(I) reflects the tracking error between the instantaneous synchro input angle and the last
S/D conversion. The Error Out signal, a dynamic signal, is created when the 53A-571
digital output attempts to follow the analog input. Under static conditions, this error
output is zero. The Error Out signal is referenced to the 7.5V DC Reference signal. The
average signal amplitude at nominal input voltage (11.8V RMS) for +1 LSB of error
[equivalent to (0 -413) = 0.00551 is 16 mV RMS.
Velocity Out
The Velocity Out signal, one line for each channel, measures the rate of change of the
Error Out signal. A +I V DC output corresponds to a +0.5 rps (revolutions per second) rate
of change for 400 Hz units. The Velocity Out signal is measured with respect to the 7.5V
DC reference voltage.
571 - 2
NOTE: If the Error Out signal and the Velocity Out signal are to be used, each signal must
feed to a separate high input of a differential amplifier. The DC reference voltage
must then connect to the low inputs of these amplifiers.
The 53A-571 Card, as shipped from the factory, does not have the Error Out and Velocity
Out signals connected to their respective front edge connector signal pins. To use these
signals the two round "pads" located directly behind each signal pin must be connected
with a jumper.
•
•
571 - 3
SPECIFICATIONS
•
Number of Channels:
Type Input:
Svnchro/Digital Converter
Manufacturer:
Accuracy:
Settling Time:
Resolution:
Frequency Range:
Input Voltages
Input format:
Reference input:
Svnchro voltage (V RMS,
phase referenced to
Ref Hi-Ref Lo)
Minimum Input Impedance
(balanced):
Data Returned As:
Power Requirements:
Voltage
(5-volt Supply):
Current
(5-volt Supply):
Voltage
(+15-volt Supplies):
Current
(+15-volt Supplies):
One synchro/digital converter channel standard.
Second channel included when Option 001 is ordered.
Synchro.
ILC Data Device Corp. model no. SDC-14520-305.
2.5 arc-minutes.
500 milliseconds.
16 bits.
360 Hz to 1000 Hz.
Synchro.
22V RMS - 30V RMS (26V RMS nominal).
S3-S1: 11.8 sin El, in phase.
S2-S3: 11.8 sin (A +120°), in phase.
S1-S2: 11.8 sin (A+240°), in phase.
17.5 kohms - line to line.
11.5 kohms - line to ground.
Six digit decimal number (0.000000 to 0.999999) followed
by carriage return and line feed. Returned data
represents the synchro-angle as a fraction of 360°.
5V and +I5V dc power is provided by the internal Power
Supply in the 53/63 Series Card Cage.
4.75 V dc to 5.25 V dc.
1.0 A, maximum quiescent, two channels.
1.1 A, peak, two channels.
+14.5 V dc to +15.5 V dc.
-14.5 V dc to -15.5 V dc.
0.035 A, maximum quiescent, two channels.
0.040 A, peak, two channels.
571 - 4
•
•
•
Cooling,:
Temperature:
Humidity:
Dimensions:
Dimensions. Shinning:
Weight:
Weight. Shinning:
Mounting Position:
Mounting Location:
Input/Output Connections:
Required Equipment
(not supplied):
Equipment Supplied:
Provided by the fan in the 53/63 Card Cage.
-10°C to +65°C, operating (assumes ambient temperature
of 55° and airflow to assure less than 10°C temperature
rise).
-40°C to +85°C, storage.
Less than 95% R.H. non-condensing, -10°C to +30°C.
Less than 75% R.H. non-condensing, +31°C to +40°C.
Less than 45% R.H. non-condensing, +41°C to +55°C.
197 mm high, 220 mm deep, 13 mm wide.
(7.5" x 8.66" x 0.8").
When ordered with a 53/63 Card Cage, the card is
installed in one of the card cage's function card slots.
When ordered alone, the shipping dimensions are:
254 mm x 254 mm x 127 mm. (10" x 10" x 5").
0.25 kg. (0.55 lbs).
When ordered with a 53/63 Card Cage, the card is
installed in one of the card cage's function card slots.
When ordered alone, the shipping weight is:
0.64 kg. (1.4 lbs).
Any orientation.
Installs in any function card slot of the 53/63 Card Cage.
A48-pin card-edge hooded connector (53A-780) connects
to all front-edge input and output signals.
53A-780 Hooded Connector or 53A-739 Analog Cable is
required with this card.
53A-571 Synchro/Digital Card
Spare Fuses (Part# 42202-52003) - Qty. 2.
Operating Manual (Part# 00000-15710).
Service Manual (Part# 00000-25710).
OPERATION
•
Overview
The 53A-571 Card is programmed by ASCII characters issued from the system controller to the
53/63 System's communications card. The 53A-571 Card interfaces to the communications card
through the 53 Series or 63 Series Card Cage's backplane. When the 53/63 Series System powers
up, the 53A-571 Card is unaddressed (power LED lit).
To address a function card for the first time, the system command "@XY" must be issued. "X"
is the mainframe address (0-9) selected on the 53A-171 Control Card for that mainframe; "Y"
is the card address (0-9) within that mainframe. The 53A-571 Card address is selected using
the card's Address Select Switch. Once a function card is addressed, it remains addressed until
the system receives another "@" character. Appendix A fully discusses the "@XY" command
and the other 53/63 Series System commands. After the 53A-571 Card is addressed, the
following commands may be issued until another function card is addressed:
Card Commands
The 53A-571 Card commands are as follows:
Aselects channel A for input requests until a B command is issued.
Bselects channel B for input requests until an A ,command is issued.
NOTE: Carriage-return <CR>, line-feed <LF>, space, or null characters that follow the A
or B command do not affect operation.
Examples:
Command Action
@05A Selects channel A for data to be sent to the system controller. The
53A-57I Card address is mainframe 0, card address 5. The Power LED
is out.
@32B Selects channel B for data to be sent to the system controller. The
53A-571 Card address is mainframe 3, card address 2. The Power LED
is out.
Input Request For the channel selected, an input request returns the synchro input
angle (0.0000 - 359.9999) as a 6-digit decimal fraction (.000000 - .999999)
of 360°. Using the system controller to multiply this fraction by 360
converts the fraction to a value measured in degrees, represented by 8
Example:
Decimal fraction returned =0.684339
8 = 0.684339 x 360° = 246.3620°
571 - 6
The synchro-analog input is strobed on each input request; there is no
need to re-address the channel with an A or B command to get an
updated reading.
The synchro voltage inputs, S3-S1, S2-S3 and S1-S2 required for a reading of 0 in degrees, are
found by the following equations:
S3-SI = 11.8 sin A V RMS
S2-S3 = 11.8 sin (0 +120°) V RMS
S1-S2 = 11.8 sin (A +240°) V RMS
Using e = 246.3620 from the example above, the results are:
S3-S1 = 10.81V RMS out of phase (with respect to RHI-Ri.o)
S2-S3 = 1.31V RMS in phase (with respect to RHI-RL0)
S1-S2 = 9.50V RMS in phase (with respect to RHI-RLo)
Figure 1 shows the differential reference and the three differential synchro inputs for this
example. Note that all synchro inputs are always either in phase or 180 degrees out of phase
with respect to the reference. The ratio between the amplitudes of the three differential inputs
(not phase angle difference) determines the angular value represented by a synchro signal.
•
•
571 - 7
•
REF Hi - REF LO
S3 - S I
•
S2 - S3
St - S2
•
EXAMPLE
SYNCHRO WAVEFORMS
FOR 9. 246. 362 °
.--
NOTE
THE FREQUENCY OF THE ABOVE WAVEFORMS
EQUALS THE FREQUENCY OF THE REFERENCE.
FIGURE 1
II . 8 VRMS
10 . 81 VRMS
I. 31 VRMS
9. 50 VRMS
571 - 8
INSTALLATION
•
•
The 53A-571 Card is a function card; therefore, it may be installed in any blue, card slot.
Setting the Address Select switch defines the card's programming address. To avoid confusion,
it is recommended that the slot number and the programming address be the same.
CAUTION:
To avoid plugging the card in backwards, observe the following:
a. Match the keyed slot on the card to the key in the backplane connector. The
component side should be to the right for a 53 Series Chassis and to the too
for a 63 Series Chassis.
b. There are two ejectors on the card. Make sure the ejector marked "53A-571"
is at the Liu for a 53 Series Chassis and to the left for a 63 Series Chassis.
CAUTION:
The 53A-571 Card is a piece of electronic equipment and therefore has some
susceptibility to electrostatic damage (ESD). ESD precautions must be taken whenever
the module is handled.
571 - 9
APPENDIX A
•
•
•
53/63 SERIES SYSTEM COMMANDS
Command Description
@XY The @XY (Address) command addresses a function card in the 53/63 Series System.
@ is a delimiter used by the 53/63 Series System.
Xis a card cage address (0-9) defined by the Address Select switch on the 53A-171
Control Card in the addressed card cage.
Yis a function-card address (0-9) defined by the Address Select switch on the
function card. Once a card cage/function-card combination is addressed, it
remains addressed until the 53/63 Series System detects a new @ character.
@XH The @XH (Halt) command halts all function cards within the card cage defined by
X. This command does not affect function cards in other card cages. How a
function card reacts to the @XH command depends on the particular card. If the
53A-571 Card is addressed (Power LED out) when a "@XH" command is received,
the card will become unaddressed (Power LED lit). In all cases, an addressed
function card (Power LED out) becomes unaddressed (Power LED lit).
STOP The STOP command is not a string of ASCII characters. This command is hard-
wired from the system controller to the 53/63 System's communications card in each
card cage. When the system controller issues a STOP command, each function card
(including the 53A-571 Card) reacts as if it had received the @XH command
described above.
How the system controller executes a STOP command depends on the
communications card used. For example, when using the 53A-128 IEEE-488
Communications Card, a STOP command is executed whenever the system
controller asserts the IEEE-488 bus line IFC (Interface Clear) true.
571 - 10
APPENDIX B
•
•
•
FRONT EDGE CONNECTOR PIN ASSIGNMENTS
Pin No. Function
1Si (synchro-analog input), channel A.
2S2 (synchro-analog input), channel A.
3S3 (synchro-analog input), channel A.
4Reserved S4 (resolver), channel A.
5RHI (reference input, high), channel A.
6RLO (reference input, low), channel A.
7Error Out, channel A. *
8Velocity Out, channel A. *
9DC Reference Out, channel A. *
10 SI (synchro-analog input), channel B.
11 S2 (synchro-analog input), channel B.
12 S3 (synchro-analog input), channel B.
13 Reserved S4 (resolver), channel B.
14 RHI (reference input, high), channel B.
15 RLO (reference input, low), channel B.
16 Error Out, channel B. *
17 Velocity Out, channel B. *
18 DC Reference Out, channel B. *
NOTE: Channel B synchro input/output signals are only active on 53A-571 Cards with
option 001 installed.
*User installed jumper required on 53A-571 Card.
571 - 11
i
SERVICE MANUAL
53A-571
SYNCHRO DIGITAL CONVERTER
6Copyright 1989 Colorado Data Systems, Inc. All rights reserved.
Contents of this publication may not be reproduced in any
form without the written permission of Colorado Data Systems, Inc.
53A-571
CD; PART PART MFG MEG PART
REFERENCE DESIGNATOR()TY
NUMBER DESCRIPTION NUM NUMBER
C04,05,06,94,951,96 2012810006 6CAP FxD CER .1uF 20% 0058 C322C104M5U5CA
50vDcw
C223 21528.33003 1CAP FxD MICA 330PF 0025 CD7CA331J03
5% 100VOCW
0321,521 20128.10005 2CAP FXD CER .01uF 20% 0106 1C25Z5u103m0508
50vDcw
C322,522,952 22022.10008 3CAP FXD TA 10UF 0106 199D106x9025CA1
10.20% 20-25vDcw
063,76 20128.47006 2CAP FXD CER .47uF 20% 0075 RPE12325u474M50v
50vDCw
C93 21018-15009 1CAP FXD ELECT 150UF 0025 NLW150-16
75% -10% 16VDCW
05021,022,023,121,122,123,124 32000-02003 8DIODE LIGHT EMITTING RED WITH 0039 547-2003
125 RESISTOR 0
DS11 32000-00103 1DIODE LIGHT EMITTING RED 5OMA 0039 550-0103
'El 40401-00571 1EJECTOR STAMP 53A-571 0026 40401-00571
STYLE B BLUE
E2 40401-10057 1EJECTOR STAMP S-D 0026 40401-10057
STYLE D BLUE
E3 45050.03293 1DCL LED EPOS DRW 00000-00564 0026 45050-03293
E4 45050-03236 1DCL LED EPOS BLK DRW 00000 0026 45050-03236
-00473
F07,87 42202-52001 2FUSE SUB-MIN 2AMP 0061 251002
PCB1 41530-57100 1P. C . BOARD VERSION 2L 0026 41530-57100
8906
006 51100-03646 1TRANSISTOR NPN HIGH SPEED 0074 mPs3646
SWITCH
R041 10117-33003 1330 OHM RES COMP 1-4W 5% 0087 R25J-330.5%
R042,06,862,96 10117-10005 410K RES COMP 1-4W 5% 0087 R25J-10K-5X
R32,52 10117-10002 210 OHM RES COMP 1-4W 5% 0087 R25J-10-5%
gli R36 12008-33004 13.3K RES NETWORK SIP 5% 0027 750-101-R3.3K
II,
R63,76 10117-22003 2
1.5w 9-PKG
220 OHM RES COMP 1-4W 5% 0087 R25J-220-5%
BYNCHRO DIGITAL CONVERTER
REv 8906.03-A
53A-571
REFERENCE DESIGNATOR CDS PART
NUMBER
QTY PART
DESCRIPTION
MFG
NUM
MEG PANT
NUMBER
R861 10117-91005 191K RES COMP 1.4w 5% 0087 R25J-91K-5%
R95 10117-30004 13K RES COMP 1-4W 5% 0087 R2SJ-3K-5%
S77 42050-10010 1SWITCH 10POS. 0101 C42315-A61-A11
UO3,84 77203-07408 2IC TU. ALS QUAD 2-INPUT 0107 74ALS08
AND GATE
U04 76601.07438 1IC TTL QUAD 2-1NPUT NAND 0107 7438
BUFFER W-OC
u05,25,35,55,65,85 71256-08283 6IC TEL S 4-BIT BCD ADDER 0092 N82S83N
u06,26,95 78401.07414 3IC TEL HEX SCHMITT INVERTING 0107 7414
BUFFER
U13 79814-00022 1PAL PROGRAMMED 16R8L REV A 0026 79814.00022
53A-570 71 72 73
U14 79813-00000 1PROGRAMMED PROM U13 0026 79813.00000
53A-571 AND 573
1U15,36,45,56,66,75,76 73310-74244 7IC TTL LS OCTAL BUFFER 0107 74Ls244N
NON-INVERTING
U16,96 76901-07402 2IC TTL LS QUAD 2-INPUT 0107 74Ls02
NOR GATE
U22 20100-14520 1IC HYBRID SYNCHRO TO DIGITAL 0036 SDC-14520-305
CONV 16 BITS 0-
U24 79813-00001 1PROGRAMMED PROM U23 0026 79813-00001
53A-571 AND 573
U34,64 73001-74273 2IC TTL LS OCTAL D-TYPE 0107 74LS273
FLIP-FLOP
U44 79813-00002 1PROGRAMMED PROM U33 0026 79813-00002
53A-571 AND 573
U46 73310-74240 1IC TTL LS OCTAL BUFFER 0107 74Ls240
u53 73001-07474 1IC TTL LS DUAL D-TYPE EDGE 0107 74Ls74A
TRIG FLIP-FLOP
U54 79813-00003 1PROGRAMMED PROM U63 0026 79813.00003
53A-571 AND 573
0U63 71200-74161 1IC TTL LS SYNCH 4-BIT COUNTER 0107 74LS161A
1J73 79001-07442 1IC TTL LS 4-LINE TO 10-LINE 0107 74LS42
DECODER
SYNCHRO DIGITAL CONVERTER
REV 8906.03-A
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•
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•
SERVICE MANUAL
53A-571
SYNCHRO DIGITAL CONVERTER
•
•Copyright 1989 Colorado Data Systems, Inc. All rights reserved.
Contents of this publication may not be reproduced in any
form without the written permission of Colorado Data Systems, Inc.
Table of contents
