Control Port Operation

Control Port Operation
Chapter 6
Control Port Operation
GENERAL
The rear panel port labeled CONTROL provides the connection for
configuration and status display via terminal monitor.
The control port is an EIA-232 compatible serial interface. Table 2-2
lists pin connections for this interface. The interface is the same as the
serial I/O connector on AT style personal computers so that standard
cables can be used.
☞
Note
Connection applications are shown in Figure 6-2 and
Figure 6-3.
Using Control Port Commands
Control port commands are entered from the control keyboard and
consist of short character strings followed by a carriage return which
select and display the various menus and options.
Figure 6-1 provides a menu flow chart indicating the access path via
command through the available menus.
Any command or option choice can be entered from any screen. This
feature allows easier configuration changes when the user is familiar
with the command strings.
Refer to Chapter 4, Front Panel Option Selection, for further information on options.
FT 100S
6-1
Control Port Operation
Option Menus
Main Menu
CL
T1 LINE
CONFIGURATION
Options
Settings
CLF1
CLF
CLF2
CLC1
CLC
/
CLC2
CLA1
M
MAIN
MENU
ANSI T1.403
PRM
CLA2
CLE1
CLE
CLT
AT&T 54016
ESF MESSAGE
CLE2
continued
FT 100S
DIS
EN
DIS
EN
DTE
CLT2
LOOP
CLT3
INT
DIS
LINE LPBCK
Figure 6-1
Menu Flow Chart
6-2
B8ZS
CLT1
CLL2
continued
AMI
TIMING
CLL1
CLL
ESF
LINE CODE
SIGNON
SCREEN
CLA
SF
FRAMING
EN
Control Port Operation
Options
Option Menus
Main Menu
CL
Settings
CLP1
T1 LINE
CONFIGURATION
CLP
CLP2
CLI1
CLI
EN
FF
IDLE CODE
CLI2
/
DIS
PAYLOAD
LOOPBACK
7F
SIGNON
SCREEN
DTE PORT
SUMMARY
CD
MAIN
M MENU
CDxx
DTE PORT XX
CONFIGURATION
CDxxNnn
NUMBERS
OF DS0s
CDxxR
DS0 DATA
RATE
CDxxR1
CDxxR2
CDxxG1
CDxxG
64 kbps
CONTIGUOUS
GROUPING
OPTIONS
CDxxG2
CDxxSyy
STARTING
DS0
CDxxTC
TRANSMIT
CLOCK
CDxxTC1
CDxxTC2
continued
56 kbps
ALTERNATE
INTERNAL
EXTERNAL
continued
Figure 6-1 Cont.
Menu Flow Chart
FT 100S
6-3
Control Port Operation
Main Menu
Option Menus
CDxx
Options
DTE PORT XX
CONFIGURATION
Settings
CDxxTP1
CDxxTP TRANSMIT
CLOCK
POLARITY
NORMAL
INVERTED
CDxxTP2
CDxxRP1
/
SIGNON
SCREEN
CDxxRP
RECEIVE
CLOCK
POLARITY
CDxxRP2
CDxxCT1
M MAIN
CDxxCT
MENU
CTS MODE
FOR DTE
PORT
CDxxCT2
CDxxRS1
CDxxRS
CDxxDS1
CDxxTM1
continued
Figure 6-1 Cont.
Menu Flow Chart
6-4
FT 100S
FORCED ON
NORMAL
FORCED ON
NORMAL
FORCED ON
NORMAL
TM
MODE
CDxxTM2
continued
NORMAL
DSR
MODE
CDxxDS2
CDxxTM
INVERTED
RSLD
MODE
CDxxRS2
CDxxDS
NORMAL
FORCED OFF
Control Port Operation
Main Menu
Option Menus
Options
Settings
CDxxLL1
CDxxLL
CDxx
DTE PORT XX
CONFIGURATION
LL MODE
FOR
DTE PORT
CDxxLL2
CDxxRL1
CDxxRL
SIGNON
SCREEN
ENABLE
DISABLE
RL
MODE
CDxxRL2
/
DISABLE
CDxxRT1
REMOTE
ENABLE
DISABLE
CDxxRT TERMINAL
LOOPBACK
CDxxRT2
ENABLE
M MAIN
MENU
CCE1
CCE
CONTROL PORT
CONFIGURATION
CONTROL
PORT
ECHO
CCE2
CCI
CCP
DISABLE
ENABLE
SET UNIT 10 character unit ID
ID
STATUS
CCP1
CCP =
LOCK
SET
PASSWORD
continued
Figure 6-1 Cont.
Menu Flow Chart
FT 100S
6-5
Control Port Operation
Main Menu
Option Menus
CT DATE AND
TIME
REMOTE
LOCAL
REMOTE
LOCAL
CRC2
CONFIGURATION
CONTROL
CRC
REMOTE
CONFIGURATION
MODE
CRM
REMOTE
CONFIGURATION
Settings
Options
TIME
CTT
DLM1
CTD
DLM2
CRC1
CRC2
/
SIGNON
SCREEN
DLM
T1 LINE
TESTS
T1 LINE
TEST MODE
DLM4
CLF1
CLF
CR1
M
MAIN
MENU
CLF2
CLC
ESF
AMI
LINE CODE
CR2
CLC2
B8ZS
DDxxM1
SEND
REMOTE
UNIT ID
CR3
SEND
REMOTE
PASSWORD
CR4
DDxxM2
DDxxM
DDxx
DTE PORT
DIAGNOSTICS
DTE PORT
TEST MODE
DDxxT1
CR5
Figure 6-1 Cont.
Menu Flow Chart
6-6
FT 100S
LOCAL
TERMINAL
LOOPBACK
REMOTE
TERMINAL
LOOPBACK
DDxxM4
REMOTE
LOOPBACK
DDxxM5
REMOTE
LPBCK/WTP
DDxxM6
TEST
PATTERN
continued
RESTART
TEST
NORMAL
DDxxM3
DDxxT
BIT ERROR
TEST
SEND
REMOTE
TIME & DATE
LINE
LOOPBACK
SF
FRAMING
CLC1
SEND
REMOTE
CONFIGURATION
LOCAL
LOOPBACK
DLM3 NETWORK
LOOPBACK
DL
CRC1
GET
REMOTE
CONFIGURATION
NORMAL
DATE
CR
Control Port Operation
PC
PC1
ESF ERROR
COUNT
PC2
LAST HOUR
ACCUMULATION
CARRIER
PERFORMANCE
HISTORY
PC3
/
M
SIGNON
SCREEN
MAIN
MENU
24-HOUR/
ERRORED
SECONDS
PC4
24-HOUR
BES
PC5
24-HOUR
SES
PC6
24-HOUR
UAS
PC7
24-HOUR
CSS
PC8
24-HOUR
LOFC
continued
Figure 6-1 Cont.
Menu Flow Chart
FT 100S
6-7
Control Port Operation
/
M
SIGNON
SCREEN
PU
USER
PERFORMANCE
HISTORY
PU0
ESF ERROR
COUNT
PU1
LAST HOUR
ACCUMULATION
PU2
24-HOUR/
ERRORED SECONDS
PU3
24-HOUR/BURSTY
ERRORED SECONDS
PU4
24-HOUR SEVERELY
ERRORED SECONDS
MAIN
MENU
24-HOUR/
UNAVAILABLE
ENHANCED
PU5
PU6
24-HOUR/CONTROL
SLIP SECONDS LOSS OF FRAME
PU7
RESET PERFORMANCE
MONITORING
COUNTERS
PU8
RESET ERRORED
ESF COUNTER
Figure 6-1 Cont.
Menu Flow Chart
6-8
FT 100S
Control Port Operation
CONNECTING TO A TERMINAL
To operate the unit with a CRT terminal:
1. Connect the FT 100S control port to a terminal with a standard PC 25 pin to 9 pin conversion cable. Refer to Table 22 for pin connections.
2. Using the front panel, select terminal operation and the
desired control port baud rate, and enable local character
echo if desired.
Word length is fixed at 8 data bits with 1 stop bit and no parity.
3. Enter a / on the keyboard to display the sign-on screen:
The following illustration shows connection application to a terminal.
FT 100S (rear)
FUS
E FU
VT 100
115 VAC
60 HZ
14W
SE F
USE
3/16
AMP S.B.
250 VAC
NWK
CONTROL
PORT 1
Control port
Figure 6-2
Terminal Connection
FT 100S
6-9
Control Port Operation
CONNECTING TO A MODEM
The FT 100S can be controlled remotely by a telephone line modem
connected to the control port.
While not required, it is recommended that a modem with an error
control protocol like MNP be used for remote control to prevent control
command errors from accidentally reconfiguring the unit.
1. Connect a null modem device or crossover cable between
the FT 100S control port and modem. Refer to Table 2-2
for control port pin connections.
2. Using the front panel, select terminal operation, the desired
control port baud rate, and local echo if desired.
Word length is fixed at 8 data bits with 1 stop bit and no parity.
3. Enter a / on the keyboard to display the sign-on screen.
The following illustration shows connection application to a modem.
Modems
FUS
E FU
115 VAC
60 HZ
14W
SE F
USE
3/16
AMP S.B.
250 VAC
NWK
CONTROL
PORT 1
FT 100S
POT
Computer
Figure 6-3
Modem Connection
6-10
FT 100S
Control Port Operation
CONNECTING TO LOCALVIEW
An FT 100S can be used in the LocalView System. To do this, select
LocalView mode from the FT 100S front panel.
The FT 100S now operates under the control of the LocalView
controller card using the device driven mode as described in the LocalView System User's Manual.
In LocalView, select the FT 100S. Operation and option selection for the
FT 100S are the same as in direct communications between the unit and
a terminal.
To end communications between the unit and LocalView, press the ESC
key. The LocalView controller card returns to the LocalView Network
Map.
FT 100S
6-11
Control Port Operation
MAIN MENU
The Main Menu accesses all other menus, configuration commands, and
option settings. After the illustrations of the first three menus, this
manual discusses the menus without further illustrations.
Enter any command from any screen for faster configuration changes.
You do not have to choose options only from the menu or option selections currently displayed. Appendix B lists all menus and options.
Enter M to display the Main Menu. See Figure 6-4.
Figure 6-4
Main Menu
6-12
FT 100S
Control Port Operation
Entering
Displays
CL
T1 Line Configuration Options:
• Framing
• Line code
• ANSI.403 PRM
• AT&T 54016 ESF message
• Timing
• Line loopback
• Payload loopback
• Idle code
Entering
Displays
CD
DTE Port Summary
CDxx
Port xx Configuration Options:
• Numbers of DS0s
• Data rate
• Grouping options
• Starting DS0
• Transmit clock
• Transmit clock polarity
• Receive clock polarity
• CTS mode
• RSLD
• DSR
• TM
• Local loopback
• Remote loopback
• Remote terminal loopback
CC
Control Port Configuration Options:
• Echo
• Status
CT
Time and Date Options
FT 100S
6-13
Control Port Operation
DL
T1 Line Test Options:
• Normal, local loopback
• Network loopback
• Line loopback
• Framing
• Line code
DDxx
the DTE Port Test Options:
• Local terminal loopback
• Remote terminal loopback
• Remote loopback with test pattern
• Test pattern
PC
Carrier Performance Options
PU
User Performance Options
T1 LINE CONFIGURATION
Enter CL
to display the T1 Line Configuration Option Menu.
Entering
Displays
CLF
T1 Framing
Select SF or ESF.
CLC
T1 Line Code
Select AMI or B8ZS.
CLA
ANSI T1.403 PRM
(Performance Report Message)
Select disable or enable.
CLE
AT&T ESF 54016 Message
Select disable or enable.
CLT
T1 Timing
Select DTE, loop or internal.
6-14
FT 100S
Control Port Operation
CLL
Line Loopback
Select enable or disable.
CLP
Payload Loopback
Select enable or disable.
CLI
Idle code
Select FF or 7F.
Example: To select the T1 Framing option,
Entering CLF
at the ENTER SELECTION prompt displays the two
choices for T1 framing:
Superframe (SF) or Extended superframe (ESF)
Entering CLF2 chooses ESF framing.
Figure 6-5 shows the screen after this sequence of commands.
Figure 6-5
T1 Line Configuration Menu
Any command can be used to display a menu or set another option can
be selected at this point.
FT 100S
6-15
Control Port Operation
DTE PORT SUMMARY
Enter CD
to view a summary of the DTE port configurations:
Figure 6-6
DTE Port Configuration Summary
The twenty-four columns indicate which DS0s are selected for each
port.
The rates for individual DS0s and whole ports are displayed along with
the port type, which is determined from the interface card that is
installed in the unit.
DTE PORT CONFIGURATION (V.35, RS-530, RS-232 CARD)
Enter CDxx
to display DTE Configuration Options.
Entering
Displays
CDxxNnn
Number of DS0s
Select 00 through 24.
CDxxR
DS0 Rate
Select 56 or 64 kbps.
CDxxG
DS0 Grouping
Select alternate or contiguous.
CDxxSyy
Starting DS0
Select 01 through 24.
6-16
FT 100S
Control Port Operation
CDxxTC
Transmit Clock
Select internal or external.
CDxxTP
Transmit Clock Polarity
Select normal or inverted.
CDxxRP
Receive Clock Polarity
Select normal or inverted.
CDxxCT
CTS Mode
Select normal or forced on.
CDxxRS
RLSD
Select normal or forced on.
CDxxDS
DSR Mode
Select normal or forced on.
CDxxTM
TM (test) Mode
Select normal or forced on.
CDxxLL
Local Loopback
Select disable or enable.
Entering
Displays
CDxxRL
Remote Loopback
Select disable or enable.
CDxxRT
Remote Terminal Loopback
Select disable or enable.
FT 100S
6-17
Control Port Operation
CONTROL PORT CONFIGURATION
Entering
Displays
CC
the Control Port Configuration Menu, which allows the
user to select the desired external control port operating
mode. The mode and bit rate are only displayed here.
The echo option is selectable.
CCE
Echo Options. Select disable if double characters
appear on terminal or enable if no characters appear.
CCI
Unit Identification Code
Select up to 10 characters.
CCP
Password: When the control port status is locked, the
unit asks for the correct password upon initiating
terminal control mode or locking the terminal. This
prevents unauthorized users from altering option
settings (applicable if a modem is used with the control
port of the FT 100S). Entering the correct password
unlocks the control port.
If the control port status is unlocked, no password
prompt appears.
Set or change the password using the CCP=command
in control mode. The control port may be locked or
unlocked at any time from the LCD front panel.
TIME AND DATE
Entering
Displays
CT
the Update Time And Date Menu, which allows setting
the time and date. The unit contains an onboard battery
driven realtime clock used as the reference for error
history reporting.
CTThh:mm:s
to update the time, where hh is the hour, mm is the
minute, and ss is the second.
6-18
FT 100S
Control Port Operation
CTDdd/mm/yy to update the date, where dd is the day, mm is the
month, and yy is the year.
T1 LINE TEST OPTIONS
Entering
Displays
DLM
the T1 Line Tests Menu, which allows initiating tests
and monitoring the network portion of the unit. (Refer
to “DIAGNOSTIC OPTIONS MAIN MENU 2”
section in Chapter 4 section if needed.)
DLM1
to initiate a T1 Local Loopback.
DLM2
to initiate a T1 Network Loopback.
DLM3
to terminate T1 Loopbacks.
DLM4
to initiate a Line Loopback.
DTE PORT TESTS
Entering
Displays
DDxxM
the DTE Port Test Menu. (Refer to “DIAGNOSTIC
OPTIONS MAIN MENU 2” section in Chapter 4
section if needed.)
DDxxM1
to return to normal operation.
DDxxM2
to activate a Local Terminal Loopback.
DDxxM3
to activate a Remote Terminal Loopback.
DDxxM4
to activate a Remote Loopback.
DDxxM5
to activate a Remote Loopback with Test Pattern.
DDxxM6
to activate a Test Pattern.
FT 100S
6-19
Control Port Operation
PERFORMANCE HISTORY
The FT 100S continuously monitors the network received signal for
error conditions and alarms.
Performance history information is stored in nonvolatile memory and
can be accessed and displayed by the local user or transmitted to a
remote FT 100S or other T1 terminating facility used for network
management.
Entering PC
carrier performance history
or
PU user performance history
displays the carrier or user performance history menu.
These two main menus for performance history are described after the
sections that list and describe the various error conditions.
ERROR CONDITION CATEGORIES
The unit monitors these error events:
•
•
•
•
•
•
•
•
•
•
ESF error count
SF error count
Errored seconds
Bursty errored seconds
Severely errored seconds
Unavailable seconds
Loss of frame count
Controlled slip second
Line code violation seconds
% error free seconds
Error Events
ESF Error Count (ESF framing only) contains a count of ESF error
events. An ESF error event is either a CRC error or an Out of Frame
Error (OOF).
6-20
FT 100S
Control Port Operation
SF Error Count (SF framing only) contains a count of SF error events.
An SF error event is either a bipolar violation (BPV) or an out of frame
error.
Error Second (ES) is any second in which an ESF (or SF) error event
occurred.
Bursty Errored Second (BES)
ESF framing
is an errored second with more than one but less than
320 ESF error events with no OOF detected.
SF framing
is an errored second with more that one but less than
320 SF error events with no OOF detected.
Severely Errored Second (SES)
ESF framing
is an errored second either with an OOF detected or
with 320 or more ESF errored events.
SF framing
is an errored second either with an OOF detected or
with 320 or more SF errored events.
Unavailable Second (UAS) is a count of seconds in which service is
unavailable. An unavailable state is declared at the onset of 10 consecutive SES and is cleared at the onset of 10 consecutive seconds with no
SES. Also, an unavailable state is declared during power off times of
less than 24 hours. If the CSU power is off for more than 24 hours, all
error history is reset.
Controlled Slip Second (CSS) any second with a replication or deletion
of a DS1 frame. This data is not detected by the FT 100S, but can be
retrieved from the AT&T 54016 compatible equipment.
Loss of Frame Count (LOFC) is the number of times a loss of frame is
declared. Loss of frame is declared after 2.5 seconds of continuous loss
of signal or OOF. Loss of frame is cleared after 2.5 seconds of no loss of
signal or OOF.
FT 100S
6-21
Control Port Operation
Line Code Violation Second (LCVS)is any second with one or more
bipolar violations. If B8ZS coding is selected, only bipolar violations
which are not part of the B8ZS code are counted.
% Error Free Seconds is defined as {(# of error free seconds) / (# of total
seconds) X 100}. The # of total seconds is counted from the last error
history reset to a maximum of 24 hours.
Error Reporting Menus
The performance menus allow the user to select error history display
options. Error data for the preceding 24 hours is accumulated in 15
minute intervals and stored in error history registers (nonvolatile
memory). Two sets of error history registers are maintained by the unit.
ESF Per AT&T Pub 54016
When selected for AT&T 54016 ESF mode, the two error history registers maintained by the unit are the following:
Carrier Error History Registers are reserved for use by the carrier or
remote T1 interface. The Carrier (or far end T1 terminating equipment)
can read these registers over the ESF Data Link (FDL) using the TABS
protocol defined by AT&T 54016. The local user can obtain a display of
the carrier's error history registers but cannot reset them.
User Error History Registers are for use by the local user. These registers can be displayed and reset if preferred by the local user.
ESF Per ANSI T1.403
When selected for ANSI T1.403 ESF mode, the two error history registers are the following:
Local Error History Registers contains error data pertaining to the
locally received signal from the network.
Carrier Error History Register contains error data pertaining to the
remotely received signal. This error data is the accumulation of received
Performance Report Messages (PRMs) received by the CSU from the
network and is a measure of the error performance of the T1 line as
observed by the T1 network receive equipment. The PRM protocol is
described in ANSI Standard T1.403.
6-22
FT 100S
Control Port Operation
SF Error
When SF framing is selected, the two error history reporting registers
are the same as in AT&T 54016. The only difference is that the carrier
cannot read the carrier registers since there is no FDL.
Local Error History ANSI T1.403
The local performance history allows display of error history data accumulated by the local FT 100S when ANSI T1.403 ESF mode is selected.
The Local 1-Hour Performance Data screen displays a summary of error
history accumulated during the previous hour. Also displayed are the
24-hour totals for each error count.
The Local 24-Hour Performance Data screen displays all accumulated
15-minute intervals during the previous 24 hours.
Remote Error History Per AT&T 54016
When in the AT&T 54016 ESF mode, remote error history is available
over the ESF data link as defined by AT&T Technical Reference 54016.
The desired remote error history information may be requested by
entering the appropriate selection preceded by an 'R' (see below). If the
request is successful, the proper report is displayed. If the request is
unsuccessful, the status line indicates an ESF data link communications
error.
The Remote ESF Performance Data report shows ESF errors counted at
the remote FT 100S and the status of the Payload Loopback.
The Remote 1-Hour Performance Data report displays the ES, UAS,
BES, SES, CSS and LOFC performance data gathered at the remote FT
100S for the last hour period (the data is stored in 15- minute intervals).
The Remote 24-Hour Performance Data reports display their respective
error event performance data gathered at the remote FT 100S for the last
24-hour period (the data is stored in 15-minute intervals).
FT 100S
6-23
Control Port Operation
Carrier Performance History
The Carrier Performance History Menu allows viewing error performance data accumulated by the FT 100S when in the AT&T 54016 ESF
mode or SF mode. The user can view these registers, but cannot reset
the data. The 'R' in the command string is used to gather remote error
history information if desired.
Entering
Displays
(R)PC1
the ESF error count.
(R)PC2
to request the 1-hour performance report.
(R)PC3
to request the 24-hour ES report
(R)PC4
to request the 24-hour BES report.
(R)PC5
to request the 24-hour SES report.
(R)PC6
to request the 24-hour UAS report.
(R)PC7
to request the 24-hour CSS report.
(R)PC8
to request the 24-hour LOFC report.
User Performance History
The User Error History Menu allows for displaying the user error
history options when AT&T 54016 ESF mode or SF mode is selected.
The 'R' in the command string is used to gather remote error history
information if desired.
Entering
Displays
(R)PU0
the ESF error count.
(R)PU1
the previous 1-hour accumulation of error data.
(R)PU2
to display the previous 24-hour accumulation of errored
seconds.
6-24
FT 100S
Control Port Operation
(R)PU3
the previous 24-hour accumulation of bursty errored
seconds data.
(R)PU4
the previous 24-hour accumulation of Severely Error
Seconds data.
(R)PU5
the previous 24-hour accumulation of unavailable
seconds data.
(R)PU6
the previous 24-hour accumulation of control slip
seconds and loss of frame count data.
(R)PU7
to reset the performance monitoring counters.
(R)PU8
to reset the errored ESF counter.
REMOTE FT 100S CONFIGURATION
The FT 100S has the capability of configuring a remote FT 100S or FT
100 using the ESF Facility Data Link (FDL) and a proprietary protocol.
Remote configuration is accomplished through the use of the control
port or LocalView. Since the ESF Data Link is utilized for this feature,
the framing option on all units must be selected for "ESF”.
☞
Note
Changing remote framing from ESF to SF will disable
remote configuration and may cause errors.
The following is a description of the various command strings used in
remotely configuring an FT 100S or FT 100.
Configuration Control
CRC
The choice for this option determines whether the information displayed
for the various control port screens pertains to the local unit or remote
unit. If the configuration control is selected for remote configuration, all
the information displayed on the various option and summary screens
shows the configuration of the remote unit at the time that its configuration was last downloaded (CR1 command). If the configuration control
is selected for local configuration, the configuration information is that
of the local unit.
FT 100S
6-25
Control Port Operation
Remote Configuration Mode
CRM
The choice for this option determines which FT 100S or FT 100 may
actually handle all of the configuration for both units. The FT 100S or
FT 100 that is selected for slave mode may be configured from the
master unit and request the configuration from the master unit but may
not change it.
Get Remote Configuration
CR1
This command initiates the actual downloading of the remote FT 100S
or FT 100's configuration information. Once this is complete, the option
and summary screens for the remote unit may be viewed by selecting
the configuration control on the local unit for remote configuration.
Send Remote Configuration
CR2
This command initiates actual transmission of the configuration information across the data link to the remote FT 100S or FT 100.
☞
Note
The remote FT 100S or FT 100's configuration is not actually updated until this command is successfully executed.
When changes are made to the various configuration options for the
remote FT 100S or FT 100, they are stored in the local FT 100S. Therefore, that information must be sent across the network using this
command before the remote unit reflects any of the changes made.
Send Remote Unit ID
CR3
Sends the remote units ID across the data link after being determined
and entered at the local unit.
Send Remote Password
CR4
Sends the remote units password across the data link after being determined and entered at the local unit.
Send Remote Time and Date
CR5
Sends the remote units time and date across the data link after being
determined and entered at the local unit.
6-26
FT 100S
Control Port Operation
COMMAND ENTRY
The following is an example of a screen when a command is entered
from the control port.
Figure 6-7
Command Entry Screen
FT 100S
6-27
Control Port Operation
6-28
FT 100S
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