SPO-2015-PA-0001A

AEROFLEX DATA EXCHANGE PROGRAM TRANSMITTAL
PROBLEM ADVISORY
1. TITLE
2. DOCUMENT NUMBER
MIL-STD-1553 RESIDUAL VOLTAGE DEPENDENCIES
ON TRANSFORMER SELECTION WHEN
INTERFACING TO AEROFLEX TRANSCEIVERS
SPO-2015-PA-0001A
4. MANUFACTURER NAME AND ADDRESS
5. MANUFACTURER POINT OF CONTACT NAME
AEROFLEX COLORADO SPRINGS INC., DOING BUSINESS
AS COBHAM SEMICONDUCTOR SOLUTIONS
4350 CENTENNIAL BOULEVARD
COLORADO SPRINGS, COLORADO 80907-3486
Tim Meade
3. DATE (Year, Month, Date)
Amendment A: 2015, December, 11
6. MANUFACTURER POINT OF CONTACT TELEPHONE
719-594-8048
7. MANUFACTURER POINT OF CONTACT EMAIL
[email protected]
8. CAGE CODE
9. LDC START
10. LDC END
11. PRODUCT IDENTIFICATION CODE
12. BASE PART
65342
ALL
ALL
JB01-05; BA02; MM016-27
UT63Mxxx; UT69151xxxx
14. SMD NUMBER
15. DEVICE TYPE DESIGNATOR
See Sheet 3
See Sheet 3
16. RHA LEVELS
17. QML LEVEL
ALL
ALL
18. NON QML LEVEL
19. BLANK
13. BLANK
ALL
20. PROBLEM DESCRIPTION / DISCUSSION / EFFECT
This AMENDMENT has been issued to include supplemental information.
Sheet 1 summarizes the supplemental information being added to previously published information.
Sheets 2 and 3 contain the original Problem Advisory text.
Sheets 4 onward are replaced with the latest revision of the comprehensive vendor supplied Product Advisory.
This Amendment is complete.
21. ACTION TAKEN / PLANNED
(1) Add Beta Transformer Technology Corporation – BTTC –(http://bttc-beta.com) as a recommended supplier of compatible
transformers with Cobham’s MIL-STD-1553 transcievers.
(2) Append a compatibility summary for BTTC transformers to Cobham transceivers to Cobhams comprehensive residual
voltage Product Advisory.
(3) Propose an acceptable leakage inductance limit for compatibility with Cobham transceivers.
Lleak1
Cobham proposes: -20% < Relative % differential leakage inductance < +20%
𝐸𝐸1.
𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅 %βˆ† 𝐿𝐿𝐿𝐿𝐿 =
𝐿𝐿𝐿𝐿𝐿1βˆ’πΏπΏπΏπΏπΏ2
𝐿𝐿𝐿𝐿𝐿1+𝐿𝐿𝐿𝐿𝐿2
βˆ— 100 ;
where Lleak1and Lleak2 are the leakage inductances on pin 1 and pin 3 of the
transformer, respectively.
Lleak2
22. DISPOSITIONARY RECOMMENDATION:
23. ADEPT REPRESENTATIVE
CHECK &
☐
USE AS IS
24. SIGNATURE
CONTACT
MANUFACTURER
Lin-Chi Huang
ADEPT PA FORM
☐
REMOVE &
REPLACE
☐
CORRECT &
β˜’
USE AS SPECIFIED
25. DATE
11 December, 2015
REVISON DATE: 8/15/2013
SHEET 1
REVISION: B
AEROFLEX DATA EXCHANGE PROGRAM TRANSMITTAL
PROBLEM ADVISORY
1. TITLE
2. DOCUMENT NUMBER
MIL-STD-1553 RESIDUAL VOLTAGE DEPENDENCIES
ON TRANSFORMER SELECTION WHEN
INTERFACING TO AEROFLEX TRANSCEIVERS
SPO-2015-PA-0001
4. MANUFACTURER NAME AND ADDRESS
5. MANUFACTURER POINT OF CONTACT NAME
AEROFLEX COLORADO SPRINGS INC., DOING BUSINESS
AS COBHAM SEMICONDUCTOR SOLUTIONS
4350 CENTENNIAL BOULEVARD
COLORADO SPRINGS, COLORADO 80907-3486
3. DATE (Year, Month, Date)
2015, February, 25
Tim Meade
6. MANUFACTURER POINT OF CONTACT TELEPHONE
719-594-8048
7. MANUFACTURER POINT OF CONTACT EMAIL
[email protected]
8. CAGE CODE
9. LDC START
10. LDC END
11. PRODUCT IDENTIFICATION CODE
12. BASE PART
65342
ALL
ALL
JB01-05; BA02; MM016-27
UT63Mxxx; UT69151xxxx
14. SMD NUMBER
15. DEVICE TYPE DESIGNATOR
(See Sheet 2)
See Sheet 2
16. RHA LEVELS
17. QML LEVEL
ALL
ALL
18. NON QML LEVEL
19. BLANK
13. BLANK
ALL
20. PROBLEM DESCRIPTION / DISCUSSION / EFFECT
Aeroflex recently worked with a customer who observed unexpectedly high residual voltage amplitude and a high degree of residual
voltage variance across a small sample of MIL-STD-1553 terminals during system level testing. A bus monitor flagged the anomaly
while the Terminal-Under-Test maintained error free communication with the test side bus controller.
MIL-STD-1553B requires that all MIL-STD-1553 terminals meet the output symmetry requirements as defined in section 4.5.2.1.1.4
for transformer-coupled (4.5.2.2.1.4 for direct-coupled) terminals. This requirement ensures that a terminal completing a transmission
does not leave a residual voltage on the bus that interferes with the sync pulse of a subsequent message. If a residual voltage with a
high enough amplitude is present on the bus while another terminal begins transmission, the residual voltage can affect the incoming
message such that the intended target fails to properly decode the message.
Output symmetry is strongly dependent upon electrical imbalances in the closed-loop system created by the digital MIL-STD-1553
protocol device, the differential transceiver, and a center-tapped isolation transformer. The problem investigation determined root
cause of the elevated residual voltage was imbalanced transfer of energy from Aeroflex’s transceivers through isolation transformers
due to parasitic elements within the transformer. There are several relevant transformer parameters that affect the
transformer/transceiver performance. Transformer datasheets generally exclude these parameters.
21.
ACTION TAKEN / PLANNED
Presently, there are an increasing number of MIL-STD-1553 Transformer vendors in the market. Based on interoperability history
and parametric performance, Aeroflex recommends selecting transformers from Pulse Electronics (http://www.pulseelectronics.com)
and North Hills Signal Processing Corp. (http://www.nhsignal.com).
Aeroflex also recommends that users perform additional parametric screening for transformers with a sorting preference toward
balanced primary side leakage inductances and reflected impedances. The detailed Product Advisory appended to this notification
includes a worksheet for additional parametric screening.
Finally, Aeroflex recommends an evaluation of primary side signal integrity and half-bit time balance vs. residual voltage during
brass board and engineering model checkout. If the circuit board uses a transformer vendor other than Pulse or North Hills, Aeroflex
strongly encourages the system designer to perform a compatibility analysis.
22. DISPOSITIONARY RECOMMENDATION:
23. ADEPT REPRESENTATIVE
CHECK &
β˜’
USE AS IS
24. SIGNATURE
CONTACT
MANUFACTURER
Lin-Chi Huang
ADEPT PA FORM
☐
REMOVE &
REPLACE
☐
CORRECT &
☐
USE AS SPECIFIED
25. DATE
February 25, 2015
REVISON DATE: 8/15/2013
SHEET 2
REVISION: B
List of Applicable Products
Applicable MIL-STD-1553 Transceivers
as of February 2015
Generic Part
SMD #s
SMD #s
#s
5962-0724201QXA
5962-9322603QXA
5962-0724201QXC
5962-9322603QXC
5962-0724201QYA
5962-9322603QZA
5962-0724201QYC
5962-9322603QZC
5962-0724201VXA
5962-9322603VXA
5962-0724201VXC
5962-9322603VXC
5962-0724201VYA
5962-9322603VZA
5962-0724201VYC
5962-9322603VZC
5962D0724201VYC
5962R9322603Q9A
5962R0724201QXA
5962R9322603QXA
5962R0724201QXC
5962R9322603QXC
5962R0724201QYA
5962R9322603QZA
5962R0724201QYC
5962R9322603QZC
5962R0724201VXA
5962R9322603VXA
5962R0724201VXC
5962R9322603VXC
5962R0724201VYA
5962R9322603VZA
5962R0724201VYC
5962R9322603VZC
5962F0724201QXA
5962F9322603QXA
5962F0724201QXC
5962F9322603QXC
5962F0724201QYA
5962F9322603QZA
5962F0724201QYC
5962F9322603QZC
5962F0724201VXA
5962F9322603V9A
5962F0724201VXC
5962F9322603VXA
5962F0724201VYA
5962F9322603VXC
5962F0724201VYC
5962F9322603VZA
5962G0724201QXA
5962F9322603VZC
ADEPT PA FORM
UT63M105CPCA
UT63M105CPCC
UT63M105CPPC
UT63M125CBCA
UT63M125CBCC
UT63M125CBPC
UT63M125CCCA
UT63M125CCCC
UT63M125CCPC
UT63M125CDCA
UT63M125CDCC
UT63M125CDPC
UT63M143BCA
UT63M143BCC
UT63M143BPC
UT63M143CCA
UT63M143CCC
UT63M143CPC
UT63M145BCA
UT63M145BCC
UT63M145CPC
UT63M147BCA
UT63M147BCC
UT63M147BPC
UT63M147CCA
UT63M147CCC
Applicable MIL-STD-1553 Protocol
Devices with Integrated Transceivers
as of February 2015
SMD #s
5962-9466308QXA
5962-9466308QXC
5962-9466308QYA
5962-9466308QYC
5962-9466309QXA
5962-9466311QYA
5962-9466311QYC
5962R9466311QYA
5962R9466311QYC
5962R9466311VYA
5962R9466311VYC
5962F9466311QYA
5962F9466311QYC
5962F9466311VYA
5962F9466311VYC
5962-9475808QXA
Generic Part #s
UT69151CDXEWCA
UT69151CDXEWCC
UT69151CDXEWPC
UT69151CLXE15W
UT69151CLXE15WPC
UT69151CLXEWCA
UT69151DXEGCA
UT69151DXEGCC
UT69151DXE-GPC
UT69151DXEWCA
UT69151DXEWCC
UT69151DXEWPC
UT69151LXE15GC
UT69151LXE15GP
UT69151LXE15WC
UT69151LXE15WP
5962-9475808QXC
UT69151RTE-FCC
5962-9475808QYA
UT69151RTE-FPC
5962-9475808QYC
UT69151RTE-GCA
5962-9475808QZA
UT69151RTE-GCC
5962-9475808QZC
UT69151RTE-GPC
5962-9475809QXA
5962-9475809QXC
5962-9475809QYA
5962-9475809QYC
5962-9858701QXA
REVISON DATE: 8/15/2013
SHEET 3
UT69151RTEWCA
UT69151RTEWCC
UT69151RTE-WPC
UT69151XTE12GC
UT69151XTE12GP
REVISION: B
5962G0724201QXC
5962G9322603QXA
5962G0724201QYA
5962G9322603QXC
5962G0724201QYC
5962G9322603QZA
5962G0724201VXA
5962G9322603QZC
5962G0724201VXC
5962G9322603VXA
5962G0724201VYA
5962G9322603VXC
5962G0724201VYC
5962G9322603VZA
5962H0724201QXA
5962G9322603VZC
5962H0724201QXC
5962H9322603Q9A
5962H0724201QYA
5962H9322603QXA
5962H0724201QYC
5962H9322603QXC
5962H0724201VXA
5962H9322603QZA
5962H0724201VXC
5962H9322603QZC
5962H0724201VYA
5962H9322603VXA
5962H0724201VYC
5962H9322603VXC
UT63M147CPC
UT63M147DIE
5962-9858701QXC
5962-9858701QYC
5962-9858701QZC
UT69151XTE12WC
UT69151XTE12WP
UT69151XTE15GC
UT69151XTE15GP
UT69151XTE15WC
UT69151XTE15WP
UT69151XTE5GCA
UT69151XTE5GCC
UT69151XTE5GPC
UT69151XTE5WCA
UT69151XTE5WCC
UT69151XTE5WPC
UT69151XTE5ZCA
UT69151XTE5ZCC
UT69151XTE5ZPC
5962H9322603VZA
5962H9322603VZC
5962P9322603QZA
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 4
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 5
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 6
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 7
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 8
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 9
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 10
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 11
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 12
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 13
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 14
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 15
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 16
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 17
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 18
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 19
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 20
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 21
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 22
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 23
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 24
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 25
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 26
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 27
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 28
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 29
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 30
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 31
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 32
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 33
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 34
REVISION: B
ADEPT PA FORM
REVISON DATE: 8/15/2013
SHEET 35
REVISION: B