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BULLETIN MOTOROLA PRODUCT SERVICES 

LAND MOBILE PRODUCT SECTOR PSB # 732 1301 E ALGONQUIN ROAD APC
# 409/509 SCHAUMBURG, IL. 60196 Date: JULY, 1995
(708) 576-0180 EXPIRES: DECEMBER
31, 1995 

Subject: QUANTAR and QUANTRO ISSUES. 

MODELS AFFECTED: T5365 and T5367 

ITEMS #1 THRU #3 - All QUANTAR and QUANTRO STATIONS in
CONVENTIONAL SYSTEM APPLICATIONS, that SHIPPED prior to APRIL
1994. Reference Serial Numbers of (x x x C S A x x x x) thru (x
x x C U F x x x x). 

ITEM #4 ---------------- Any SECURENET QUANTAR or QUANTRO
using WIRELINE OUTPUT for SECURENET (12Kbit) AUDIO, that SHIPPED
prior to NOVEMBER 1994. Reference Serial Numbers of (x x x C S
A x x x x) thru (x x x C U V x x x x). 

ITEM #5----------------- All QUANTAR and QUANTRO TRUCKING
STATIONS, that SHIPPED prior to DECEMBER 1994. Reference Serial
Numbers of (x x x C S A x x x x) thru (x x x C U X x x x x). 

Problem: 1) Tone Remote Control (TRC) decode reliability with
multiple channel operation. It has been found that there are some
Centracom applications where channel control at the console is performed thru
scrolling action, the station fails to respond to the last TRC
sequence which requires a channel change. The failure to decode
is due to the fact that the scrolling console can send a HLGT/FT sequence
to the station with the spacing of 300 milliseconds between
sequences. The station cannot respond to sequences that come at
that rate. The station processes the first sequence; it ignores
the second sequence. The station properly handles dual function
tone sequences. This situation exists in Release 1.00 and Release
2.00 of station firmware. The station firmware, in Release 3.00,
has been corrected so that it will properly respond to TRC
sequences that come at that rate. 

Solution: It is recommended that the station firmware be
replaced with the current Release 4.01, if your system is
designed for any TRC command to be sent to the station at least
300 msec after a previous command. 

Problem: 2) When a strong signal, greater than +20dbm, is
injected into the front end of the receiver, the receiver's
pre-amp bias level goes below the normal limit of operation. The
background diagnostics, which continuously monitor the station operation,
sense the threshold crossing and declares a receiver alarm. The
condition is logged in the station's status log as an alarm and
the receiver is shut down. When the strong signal is removed, the
background diagnostics sense that the pre-amp bias voltage is
again within the proper operating range and the receiver is
restored to service after three minutes. This mode of operation
exists on both Release 1.00 and Release 2.00. The operation of
the background diagnostics has been changed in Release 3.00. The
diagnostics will no longer shut down the receive function when
the diagnostic alarm is encountered. However, the condition is
recorded in the station's status log as an alarm so that the user
knows that the condition exists. Thus, when the receive signal is greater
than +20dbm, the receive function is not terminated and there
will not be a delay in service restoration when the strong signal
is removed. 

Solution: It is recommended that the station firmware be
replaced with the current Release 4.01. Problem: 3) When
configured for Spectra Tac operation, the station may unsquelch
even if a receive signal is not present and place receive noise
on the wireline. This situation occurs at the end of a current reception.
There is a 20 millisecond window where the station mutes the RX
wireline before putting status tone back on the RX wireline. If
carrier is detected in this window, the station unsquelches and remains
unsquelched even if the carrier goes away. This situation is
typically encountered during periods of high fade receptions or
receptions from fringe areas. Normal operation is restored with
the next reception, provided the window is not hit. Unsquelching
during the window has been removed with Release 2.00 and subsequent
releases. 

Solution: It is recommended that the station firmware be
replaced with the current Release 4.01. 

Problem: 4) Station wireline has audio holes, even during
strong signal coded calls. If the station is a repeater the audio
hole is apparent only in wireline audio to the console and not in
the transparent in-cabinet repeated audio, and may be more or
less pronounced depending on the source of Securenet into the
station receiver. Audio holes are typically short, about 100 to
200 milliseconds but not more than 2 seconds in duration, and is
propagated as loss of code detect through Securenet Digital Voice Modems
(DVMs), Console Interface Units (CIUs) and Digitacs, causing
missed syllables or words at the console or voted repeat audio.
This situation occurs in all releases thru Release 3.10. 

Solutions: There are several of known causes for these audio
holes, listed in order of severity; A) Quantar/Quantro Wireline board
jumpers. DC blocking capacitors used to isolate transformer primary from
DC currents (used with DC remote control) are in place as the
station ships from the factory to protect the transformers. If
Securenet operation is desired, bypass the DC blocking capacitors
using wireline board jumpers. Proper jumper positions for
Securenet are: "Normal" position for jumper JU1010 (4
wire audio), and "Alternate" for jumpers JU1011 and
JU1012 (bypasses DC blocking capacitors). JU1011 is in the
"Alternate" position when the header connects the upper
two pins, and JU1012 is "Alternate" when the header is connecting
the lower two pins when the board is viewed in its normal
vertical position. 

B) Console Interface Unit TRC board jumper (JU209). This
jumper 0 ohm resistor is normally in place for Half Duplex CIU's.
In Full Duplex CIU's, if in place, it can cause audio holes when
Quantar or Quantro station is used in the system. Make sure this
jumper resistor is removed in Full Duplex CIU's. 

C) Quantar/Quantro Firmware. In some cases, even after the
above items have been addressed, some audio holes may still be
seen in systems with firmware prior to Station Control Released
4.01. Firmware revisions in the Quantar/Quantro address this by
changing the way the wireline 12 Kbit data is clocked, making it
easier for other Securenet products to lock on to the 12 Kbit
data. If you suspect this problem exists please contact Product
Services for replacement firmware. Release 4.01 requires that both
the Wireline Module Hardware Kit number and the Station Control
Module Hardware Kit number be at least Issue B or greater. If
your station has issue A or earlier, then contact Product
Services, (708) 576-0180, for assistance. 

Problem: 5) Whenever a call is assigned to talk groups TG1 or
TG100 and the talk group call is less than 2 seconds, The call goes
through but a TSTAT failure is logged on the station. The TSTAT failure causes
the 6809 controller to fail the channel. The channel is retested
5 minutes later, found good, and brought back into service. This
condition exists in Releases 2.0, 3.0, and 3.1. 

Solution: It is recommended that the station firmware be
replaced with the current Release 4.01. 

------------------------------------------------------------------------------------------------------------------------- NOTE:
The situations described above do not affect all installed
stations. ------------------------------------------------------------------------------------------------------------------------- 

Release 1.00
---------------------------------------------------------------------- Released:
May 1993 Station Control Module - 51-91020C19 and C20 Requires
RSS (Rev. 1.0) Wireline Module - 51-91012C71 and C72 Exciter
Module - 51-91012H95 Release 1.20 ---------------------------------------------------------------------- Released:
Cot 1993 Station Control Module - 51-91020C41 and C42 Requires
RSS (Rev. 1.0) Wireline Module - 51-91013H13 and H14 Exciter
Module - 51-91012L68 

Release 2.00
---------------------------------------------------------------------- Released:
Jan 1994 Station Control Module - 51-91020C47 and C48 Requires
RSS (Rev. 2.0) Wireline Module - 51-91013H17 and H18 Exciter
Module - 51-91012L71 

Release 3.00
---------------------------------------------------------------------- Released:
Apr 1994 Station Control Module - 51-91020C49 and C50 Requires
RSS (Rev. 3.0) Wireline Module - 51-91013H19 and H20 Exciter
Module - 51-91012L72 

Release 3.10
---------------------------------------------------------------------
Released: Aug 1994 Station Control Module - 51-91022C51 and C52 Requires
RSS (Rev.3.01) Wireline Module - 51-91013H21 and H22 Exciter
Module - 51-91012L73 

Release 4.01
---------------------------------------------------------------------
Released: Dec 1994 Station Control Module - 51-91022C13 and C14 Requires
RSS (Rev. 4.0) Wireline Module - 51-91013H25 and H26 Exciter
Module - 51-91012L75 

------------------------------------------------------------------------------------------------------------------------- Firmware (RVN_
_ _ _) can be obtained at no charge by contacting the C&E
Parts Department and referencing this Bulletin #. Please note: To
install RVN_ _ _ _ firmware you must have 4.0 version of RSS. -------------------------------------------------------------------------------------------------------------------------
A charge of one hour labor per station plus travel time to the
site is authorized by referencing this bulletin # and submitting
the R021-19 claim form. 
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Product Support Bulletin 732 - Revision history

Bryan at 10:07, 28 March 2019

Bryan at 10:02, 28 March 2019

Bryan at 10:00, 28 March 2019