Zonge GDP-32 - Page 83

RECEIVER SETUP
Section 6, Page 23 May 2002
SYNCHRONIZING MULTIPLE RECEIVERS WITH THE MULTI/SY-16 SYNC. BOX:
Up to five GDP receivers can be synchronized to one XMT by using the MULTI/SY-16 Sync
Box. Additional Sync Boxes can be linked for synchronizing an unlimited number of GDP
receivers. Two or more receivers can be synchronized to one XMT-32 using the following
procedure:
1. Obtain a MULTI/SY-16 Sync Box (Figure 6.5(a)) and extra synchronization cables (one
per receiver) from Zonge Engineering. Designate one receiver as master and the rest as
slave receivers.
2. Connect a synchronization cable between the Transmitter I/O port of the master GDP
receiver and the transmitter controller's I/O port, as shown in Figure 6.5(b).
3. Adjust the oscillator frequency using the “Synchronizing the Transmitter and Receiver”
routine (on page 17) on the master receiver, but do not push RESET on the transmitter
controller.
4. Remove the synchronization cable from the master receiver and attach to the slave
receiver.
5. Adjust the oscillator on the slave receiver, but do not push RESET. Continue this
process until all receivers are adjusted to the same frequency as the XMT-32.
6. Make attachments as shown in Figure 6.5(d), being careful to connect the receivers and
transmitter controller to the proper ports on the Sync Box.
7. Press RESET. If the receivers and transmitter controller are connected correctly, the
needles on the receivers’ meters deflect to the right while the RESET button is
depressed. The meters will begin to move in synchronization when the RESET button is
released.
8. Disconnect the synchronization cables. Remove the cable from the XMT-32 first, then
from the GDP.
9. Verify the synchronization operation by measuring the phase difference between the
external calibration signal on a particular receiver and the corresponding signal generated
by the XMT-32. (See on page 17 - Synchronizing the Transmitter and Receiver.)