ZT 4804 Rear Panel Transition Board

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This 6U, single-slot, rear panel transition board with alarm outputs provides rear panel access to the I/O functions of a number of Performance Technologies single board computers (SBC), specifically the ZT 5503 and ZT 5551.

It is designed to function in the rear panel slot of several Performance Technologies 6U CompactPCI® systems and enclosures, providing interfaces for two user inputs and six alarm relay outputs.

The ZT 4804 allows for efficient troubleshooting and servicing of a system without disruption of the CPU board. All cabling is managed via the transition board, thus enhancing the reliability and availability of the system while running diagnostics or conducting maintenance.

Highlights

Key Design Elements

Ethernet

The ZT 4804 transitions an SBC's Ethernet channels A and B for rear panel access. Both 10 Mbit/s and 100 Mbit/s Ethernet protocols are provided through each of two RJ-45 rear panel connectors. (Note: Ethernet channel B is not accessible to the rear panel in a high availability system due to the fact that it is bused to the redundant processor board, through backplane connector J5, as an inter-processor communications channel.)

SMBus

Access to alarm and system monitoring functions is provided by incorporating an SMBus interface to the processor board, providing isolation of the local SMBus from the processor board, however, during hot-swap cycles. All SMBus devices are accessed via a unique device driver. SMBus implementation provides two 8-bit registers for I/O and control functions.

Input/Output

Two optically-isolated debounced inputs are provided for application use. The inputs must be biased from an external source and are configurable through jumpers to sense either 0-5VDC or 0-60VDC input levels. Reverse polarity and overvoltage protection are provided.

These inputs are available as rear panel inputs only; no provision is made for front panel connections. The ZT 4804 provides six alarm relay outputs, allowing configuration of the output pin pair as either a normally-open or normally-closed pole, through jumpers.

Two serial port connectors, J2 and J4, provide an alternative means of accessing COM1 and COM2 serial ports, respectively. Additionally, the ZT 4804 provides access to a processor board's secondary EIDE channel and floppy controller through internal connectors. A PS/2-style keyboard connector can be used in lieu of the connector on the host SBC. The ZT 4804 also supports a PS/2-style mouse port.

Alarm Cut Off (ACO) and reset push-button switches are provided, along with an ejector-sense mechanism for triggering a hot-swap event. LEDs indicate floppy access, IDE access, ACO, Alarm Conditions (critical, major, minor) and hot-swap removal of the ZT 4804.

Warranty

One year

Specifications

Power Req. Min. Typ. Max.
Supply Voltage, Vcc 4.75V 5.00V 5.25V
Supply Current, Vcc=5.0V 0mA - 500mA

Each ZT 4804 relay output offers a normally-open and normally-closed pole position, and has the following maximum contact ratings:

Mechanical Measures: 9.2" x 3.2" (233.35mm x 80mm)
Width: 0.8" (1 slot - 4HP)
Weight: 236 grams (8.0 oz)
Connector: IEC-1076-4-101 (J1-J5)
Environmental Operating Temperature: 0 to +65 C
Storage Temperature: -40 to +85 C
Relative Humidity: < 95% at 40 C, non-condensing
Peripherals and I/O Interfaces The ZT 4804 transitions I/O signals from the CPU board for rear panel use via the J3, 95-pin, 2 mm x 2 mm, female connector.

 
I/O Interface Rear Panel Compatibility
User Input/Alarm Relay
Output Conn.
16-pin
COM1 Serial Port 9-pin, MDSM
COM2 Serial Port 9-pin, MDSM
PS/2 Keyboard Connector 6-pin, DIN, PS/2
PS/2 Mouse Port Connector 6-pin, DIN, PS/2
Ethernet Connector A 8-pin, RJ-45
Ethernet Connector B 8-pin, RJ-45


 

Internal I/O Interface Compatibility
EIDE Connector 40-pin
Floppy Drive Connector 34-pin
Regulatory Compliance Designed for NEBS/ETSI

CE Certification
The ZT 4804 meets intent of Directive 89/336/EEC for Electromagnetic Compatibility & Low-Voltage Directive 73/23/EEC for Product Safety. Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities:

Safety

UL/cUL 60950 Safety for Information Technology Equipment
EN/IEC 60950 Safety for Information Technology Equipment
CB Report Scheme CB certificate and Report

Emissions Test Regulations
FCC Part 15, Subpart B
EN 55022
CISPR 22
Bellcore GR-1089

EN 50081-1 Emissions
GR-1089-CORE Sections 2 and 3
EN 55022 Class A Radiated
EN 55022 Power Line Conducted Emissions
EN 61000-3-2 Power Line Harmonic Emissions
EN 61000-3-3 Power line Fluctuation and Flicker

EN 55024 Immunity
GR-1089-CORE Sections 2 and 3
EN 61000 4-2 Electro-static Discharge (ESD)
EN 61000 4-3 Radiated Susceptibility
EN 61000 4-4 Electrical Fast Transient Burst
EN 61000 4-5 Power Line Surge
EN 61000 4-6 Frequency Magnetic Fields
EN 61000 4-11 Voltage dips, Variations & Short Interruptions