MTS Series 793 Utility Software - Manual (Page 46)

The Model 493.40 board is compatible with Aero ST, FlexTest GT, FlexTest SE, and TestStar IIm
controllers. The Model 494.40 board is compatible with FlexTest 40/60/100/200 controllers.
Note:
When a 494.40 I/O carrier board is plugged in to a chassis, but the .hwi file does not include
the I/O board, the system load will generate a hardware interlock that you cannot clear.
Paddleboard considerations for the Model 494.40 I/O Carrier
To avoid system-load errors, the Model 494.40 I/O carrier that connects to the paddle board (a
circuit board with ribbon cables that connect the VME bus to the transition bus) must be configured
as follows:
• The paddle board must connect to the 494.40 with the lowest VME address.
• The 494.40 board must be configured as Clock type=Master.
Description Item
Describes each Model 49x.40 I/O Carrier board installed in the Chassis
and their installed mezzanine cards. Each I/O Carrier board can
support up to four mezzanine cards. 49x.40 I/O Carrier circuit
board icon
The first I/O Carrier board in slot three (typical) provides the master
clock (Clock Type=Master) for all other I/O Carrier boards. If a GRES
III board is added (typically in Slot 10), the clock type for this I/O
Carrier board must be changed to Clock Type=Dependent.
For FlexTest SE and FlexTest 40 controllers, the System Board
provides the master clock (Clock Type=Master) for the system, so all
I/O Carrier boards must be set to Clock Type= Dependent.
Address: Describes the proximity of the circuit board within the chassis.
This address setting must match the address switch settings on the
49x.40 board. 49x.40 Properties tab
Note:
The Detect Hardware feature automatically detects the correct
address setting from the board and enters it in the .hwi file.
Slot: Specifies which slot the circuit board occupies in the chassis.
Application Attribute: an editable string that can be queried by a
controller application.
Clock Type: Master/Dependent.
For Master Clocks (Clock Type = Master):
Clock Mode: Binary/Decimal.
Note:
Changing the clock mode (from binary to decimal or from
decimal to binary) on systems with Series 494 hardware affects
the calibration of AC conditioners which can result in inaccurate
readings. If you want to run in a different clock mode, you must
32 MTS Series 793 Utility Software
HWI Hardware Settings