User's Manual

Table Of Contents

Technical Manual Options

5. Install the Option PCB onto the 4 standoffs with the 16way connector

closest to DIP2 on the Motherboard. Secure with the qty4 3x5mm

machine screws previously removed.

6. Install the 16way-ribbon cable between connector SKK on the

Motherboard and SKK on the Option board, taking note that the cable is

correctly orientated.

7. Check that the option board jumpers are in the following positions;

1. JMP1 IN

2. JMP2 IN

3. JMP3 ON

4. JMP4 OFF

MX800 Controller Setup:

Change the Motherboard jumper JMP5 to position 1-2 (OFF).

MX800 Testing:

Connect a Communications Test Set via the RIB to the MX800.

Set the switches on the RIB to Line Audio and E&M.

Using Mxtools program the appropriate RX CTCSS Tone required.

Set the Comm.’s test set to measure Rx line level and ensure that the Receiver

is operating correctly and there is no CTCSS component on the Rx audio.

Replace the MX800 cover.

3.8 T10 Power Save Mode

3.10.1 Description

For solar powered sites and other power critical applications the MX800 is

capable of a Power Save (Low Standby Current) Mode. This option can be

implemented in three stages. Stage one implementation replaces the micro

controller linear voltage regulators with switching regulators. Response times

are unaffected. Stage two involves removing power from the exciter when the

radio is in standby mode. In this case RX responses times are unaffected. In

stage three the RX power is cycled on and off at a user selectable duty cycle.

Essentially the choice of mode of operation involves a compromise between

response time and average current consumption. Current consumption of

250mA is achievable with a typical response time in the order of 1sec.