CPI VZV-2776K6

6900K6 Series 20 Watt TWT Amplifier
Features
• IEEE-488
• CIIL/MATE Compatible
• Talker and Listener
• Interface Built-In
• CE marked and TUV approved
The 6900K6 Series are GPIB controllable versions of the popular CPI 6900K4 series
low power commercial TWT amplifiers.
CPI 6900K6 series TWT amplifiers are manufactured with the same quality as all CPI
amplifiers and are backed by CPI’s worldwide 24-hour customer support network that
includes 9 regional factory service centers. Quality, reliability and product support are
integral parts of your CPI power amplifier.
Model #
VZC-6961K6
VZX-6981K6
VZU-6991K6
VZM-6991K6
VZV-2776K6
Power
(Watts)
20
20
20
20
20
Freq
(GHz)
4-8
8-12.4
12.4-18
8-18
4-18
Gain
(dB)
35
40
40
40
30
O/P
Conn
N
N
N
N
N
These units can function as either a GPIB Listener or a Talker; i.e., the TWTA can be
controlled by the external computer and report on its status.
When addressed as a Listener, the TMA causes the amplifier to take some action such as
turning high voltage ON.
When addressed as a Talker, the amplifier sends back information on its operating or
fault condition.
Local operation is possible by enabling the front panel controls; however, incoming Bus
commands will override the front panel unless an internal safety switch has been set to
prevent it.
Two control languages are included; CPI Simplified Language (CSL) and a version of the
Air Force’s Control Interface Intermediate Language (CIIL). An internal switch allows
quick selection of language.
Specifications
Refer to CPI 6900K4 Series data sheets for detailed specifications of the basic unit. This data sheet covers only those specifications
which apply to the interface itself.
Listener Functions
• High Voltage ON/OFF
• Fault Reset
• Heater ON/OFF
Talker Functions
• Heater Power ON
• HV ON
• Summary Fault
• Interlock Fault
• Heater Time Delay
• Standby
• Helix Fault
• Thermal Fault
Data Interface
IEEE Std. 488-1978. Driver and receiver circuits are fully Bus compatible. Receivers contain Bus
terminating resistors and have 500 mV hysteresis. Drivers are open collector devices, capable of driving
up to 14 other Bus compatible devices. Power up/down protection is included to prevent transmitting
invalid data to the Bus or holding the Bus when power is off.
Format
Sixteen lines, eight for data and eight for control and status messages. Data transfer is byte serial using
a three-wire handshake per IEEE-488 Standard.
Address Capability
Unit recognizes 31 primary addresses (address 0 through 30) or 31 secondary addresses with a fixed
primary address of 17 (address 1700 through 1730).
Interface Handshake
Repertoire:
Function
Source Handshake
Acceptor Handshake
Talker
Extended Talker
Listener
Extended Listener
Service Request
Parallel Poll
Remote/Local
Device Clear
Device Trigger
Controller
Bus Driver
Code
SH1
AH1
T5
TE5
L3
LE3
SR1
PP1
RL0
DC1
DT1
C0
E1
Comments
Implemented
Implemented
Implemented
Implemented
Implemented
Implemented
Implemented
Implemented
Not Implemented
Implemented
Implemented
Not Implemented
Open Collector
Language
CPI Simplified
Language (CSL)
A simplified version of CIIL. All commands enclosed in brackets are deleted. In addition, the SRQ
function is enabled allowing serial and parallel polling as well as the “D” command status request.
Control Interface
Intermediate Language
(CIIL)
Compatible per proposed MATE System Control Interface Standard No. 2806763 Rev. B. Several
non-CIIL approved noun modifiers have been defined as required by a TWTA. CIIL required commands
are indicated herein enclosed by brackets [ ].
Listener Operation
Codes and Statements
Function Op-Code
FNC = Function
CHØ = Channel Ø
SET = Set
RST = Reset
STA = Status
Set-Up Statements
Set-Up to Standby
FNC
[SGC
: CHØ
Noun
SGC = Signal Conditioner
SET
GAIN
50
SET]
VLST
Modifier
GAIN = Gain
VLST = Standby
VLON = Voltage ON
CR
[LF]
If this command is received during the ON mode, high voltage will be switched OFF and the amplifier
placed in Standby; i.e., heater ON, high voltage OFF.
If this command is received when the heater is OFF, the heater will be switched ON and the amplifier will
switch to Standby at the end of the Heater Time Delay period.
Set-up to ON
FNC
[SGC
:CNØ
SET
GAIN 50 SET]
VLON
CR
[LF]
If this command is received when the amplifier is in Standby, the High Voltage will be switched ON.
If this command is received when the amplifier is still in Heater Time Delay, High Voltage will be
switched ON at the end of the delay period.
If this command is received when the heater is OFF, the heater will be switched ON and the amplifier
will switch to High Voltage ON at the end of the Heater Time Delay period.
Reset Statement
RST [SGC :CHØ] CR [LF]
Upon receipt of this command, the High Voltage is switched OFF. If it is ON the heater is switched
OFF and any faults reset.
Status Statement
STA [SGC] CR [LF]
Upon receipt of this command, the TMA prepares a current status response. This command must
be issued before addressing the TMA as a Talker.
Status Message when addressed as a Talker:
Command Accepted:
[Space] CR LF
Fault:
FØ7TWTA:(fault message)
Priority
Fault Messages
1
2
3
4
5
6
7
8
SYNTAX ERROR
THRM OVERLOAD
HELX OVERCURRENT
INTERLOCK FAULT
DUTY CYCLE TRIP
PRF TRIP
GRID FAULT
SUMMARY FAULT
Heater Time Delay:
FØ6TWTA:AMP TIMING
CR
LF
CR
LF
Mechanical & Environmental
Same as 6900K4 Series
Special 488 Functions
Device Clear/Selected
Device Clear:
Causes all relays to de-energize and then assume initial pattern. Additionally, Device Clear
and Selected Device Clear output a clear pulse on the Clear lines, initialize the program flags and
pointers and clear memory.
IFC:
IFC clears all Bus Interface functions and, if CLEAR switch on rear panel is on, will cause all relays
to de-energize and then assume PROM programmed initial pattern and generate a clear pulse on
the Clear lines.
SRQ (CSL mode only):
Generates a Service Request
Interrupt (SRQ) when external data is received if not addressed as a talker. SRQs can be
completely inhibited by depressing the front panel SRQ INHIBIT switch. The SRQ signal is reset
when the TWTA is addressed to talk or when Serial Polled.
Serial Poll Response:
The TMA responds to a serial poll by placing an 8-bit character on the Bus data lines. The bit
assignments are:
DI0 1
DI0 2
DI0 3
DI0 4
DI0 5
DI0 6
DI0 7
DI0 8
Heater Time Delay
Standby
HV ON
Zero
Command not executed, syntax error causes RSV bit (DI0 7) to be set.
Summary Fault
RSV
Zero
Parallel Poll Response:
The TMA responds to a parallel poll by placing the Ready Status condition in the bit selected by the
PPE command. The bit is a logic ‘1’ if the RDY light is ON, logic ‘0’ if OFF. The Ready Status is
determined by the Summary Fault condition; i.e. Not Summary Fault = Ready.
Status Request:
Syntax:
Response:
D CR LF
D n n n (Where n represents a status character)*
Character
Bit
Definition
1
–
ASCII D
2
3
2
1
Ø
Heater Time Delay
High Voltage ON
Standby
Mains Power ON
3
3
2
1
Ø
Interlock Fault
Thermal Fault
Helix Fault
Summary Fault
4
3
2
1
Ø
Remote
Grid Fault
Frequency Trip
Duty Cycle Trip
* A three-character argument is returned in response to the summary status query. Each character contains 4 bits of
information. The bits are represented in ASCII hexidecimal notation (00H-0FH).
Controls and Indicators
Controls
Mains Power ON/OFF
Front Panel Enable
Reset
Standby
Operate
CIIL Enable: Internal switch. Disables service request interrupt
Address Switches: Talk, Listen and Secondary Address switches (MTA, MLA, MSA)
Indicators:
Mains Power ON
Filament ON
Standby
Operate
Summary Fault
Helix Fault
Note:
Characteristics and operating values are based on performance tests. These figures may change without notice as a
result of additional data or product refinement. Please contact CPI before using this information for system design.
satcom
division
Communications & Power Industries Canada, Inc.
45 River Drive / Georgetown, Ontario / Canada L7G 2J4
TEL: 905-877-0161 / FAX: 905-877-5327
E-MAIL: marketing@cmp.cpii.com / WEB: www.cpii.com/cmp
IAMP12 03/04