Bacharach HGM-SZ Specifications download pdf (Page 30)

26 Instruction 3015-4256

2. Refer to Figure 2 to perform the following steps to remove the old IR bench:

a. Pull the 10-pin and 12-pin electrical connectors from their sockets on the IR bench. Note that

these connectors may have been secured in place for shipping purposes with either hot-glue or

cable ties. As necessary, either pry the hot-glue from each connector, or cut off the cable ties.

b. Pull the tubing from the gas-inlet and gas-outlet fittings on the IR bench.

c. Using wire cutters, cut the two cable ties that secure the IR bench to the enclosure, and then

remove the bench.

Installing the New IR Bench

3. Perform the following to install the new IR bench:

a. Remove protective caps from the gas-inlet and gas-outlet fittings on the new IR bench.

b. Position the new bench inside the HGMSZ enclosure so that the end with the 12-pin electrical

connector (IR Source) is located on the right, and that the gas fittings are facing upwards.

c. Using the two cable ties supplied in the kit, secure the bench to the cable-tie mounts on the

side wall of the enclosure. Cut off any cable-tie excess.

d. Connect tubing from pump to the IR bench gas-outlet fitting, and connect tubing from purge

valve V1 to the IR bench gas-inlet fitting.

e. Plug the 12-conductor ribbon cable from IR SOURCE connector J5 on the main board into the

12-pin IR bench connector.

f. Plug the 10-conductor ribbon cable from DET connector J6 on the main board into the 10-pin

IR bench connector.

4. Check to ensure that the new IR bench is properly secured, and that all tubing and electrical connectors

are tight.

5. Turn ON the HGMSZ’s AC circuit breaker.

6. Allow the monitor to warm-up for at least ½ hour before proceeding.

Adjusting IR Bench Emitter Drive Power Level

7. This section explains how to access the IR screen, adjust the IR source power drive and exit up one

level to then adjust the digipot as described below. First, access the monitor’s set-up mode and display

the IR emitter power adjustment screen as follows:

a. With the monitor in its MEASURE mode, use the Keypad buttons to place the arrow (>) on the

display next to the CAL function.

b. Press the Right-Arrow and ENTER buttons at the same time to display the revision screen.

c. Press the QUIT button to display the set-up screen.

d. With the arrow (>) next to the IR function, press the ENTER button to display the IR emitter

adjustment screen.

e. Change IR emitter drive level to 550 mW or 700mW, corresponding to the user’s version of the

part as seen in the items required section containing the part numbers, by adjusting R37. If R37

is not present (newer motherboards), use the Up/Down arrow keys to adjust the emitter power.

f. Press the ENTER button and then proceed to the next section and adjust the DIGIPOT as

necessary.

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 36 37 38

No comments

Bacharach HGM-SZ Specifications Page 30