Hx1/Hx2 User Manual

5

AES I/O OPTION

5.1 Installation Instructions

The Hx1 and Hx2 hybrid units can be purchased with the optional AES I/O module preinstalled, or as an upgrade kit to be installed in the field. The AES board Upgrade Kit [2011-

00068] includes the following items:

| 33

1701-00149-100 (Qty =1) AES Board assembly

1308-00023-100 (Qty =2) board standoff, M3x10mm, MF

1301-00077-100 (Qty =2) screw, M3x6mm Phillips Pan-Head steel zinc

The following instructions explain the steps to install the AES I/O module onto the motherboard using the upgrade kit. Chassis cover removal and upgrade kit installation should only

be performed by a qualified technician or engineer.

1.

AC power must be disconnected prior to removing the chassis cover. Remove the AC power cable from the power inlet in the back of the hybrid unit.

2.

Remove the 10 Phillips screws that mount the top cover to the hybrid chassis.

3.

Locate the two sets of four jumpers each at both JP3 and JP4 on the motherboard.

Likewise, locate edge connector JP5 on the motherboard. (See figure below). Remove the jumpers from both JP3 and JP4 and reserve them for future use if you like. (These jumpers must be re-installed if the AES I/O module is removed and the Hx is converted back to analog operation).

4.

Locate the two gold plated mounting holes shown in the figure. Take one of the board standoffs (1308-00023-100) and screw the male end into the mounting hole located between JP3 and JP4. Take the other standoff and screw the male end into the mounting hole located below capacitor C137.

34 | Section 5

5.

Align connectors JR2 and JR1 on the AES plug-in module with JP4 and JP3 on the motherboard. Likewise, align connector JP1 on the plug-in module with JP5 on the motherboard. (See figure below). Push firmly to seat the plug-in module onto the motherboard. Visually confirm that connector JR2 fits onto all four sets of pins on JP4, and

JR1 connector fits onto all four sets of pins on JP3.

6.

Take the two mounting screws from the kit (1301-00077-100) and install them into the female side of the board standoffs in order to secure the AES I/O module to the hybrid motherboard.

7.

Reinstall the top cover using the 10 Phillips screws.

8.

Plug the AC power cord back into the socket and wait for the unit to power up. The hybrid unit will automatically detect the presence of the AES plug-in module, and directly transmit and receive digital data at the clock rate of the AES source plugged into the SEND IN

XLR input connector.

9.

You can use the built-in diagnostic mode of the hybrid unit to confirm that the AES I/O module is working properly. Refer to Section 6 of the User’s Manual for instructions on how to enter this mode of operation. Test “T2” is a loopback test that takes audio present