Black Box Fiber Meter Manual page 48

If you are planning to start all Autotests from the same
Fiber Meter Main handset, ignore this message. Press
the F4 button to acknowledge the message.
If you expect to change the operation roles of the Fiber
Meter handsets (for example, to initiate tests from either
end of the fiber), you will need to set the power references
in the Remote handset separately. To do this, turn the
rotary dial on the Fiber Meter Main Unit to REMOTE, turn
the dial on the Remote Unit to CAL, and repeat the
reference-setting procedure as described on the previous
page.
Once the reference measurement is made and you are
ready to begin testing, disconnect the test jumpers from the
receive (RX) ports as shown in Figure 5-1. Do not
disconnect the test jumpers from the transmit (TX) ports
after the reference has been set.
NOTE
IMPORTANT
CHAPTER 5: Autotest
45