2
Instructions
Parts and functions
Front panel
Rear panel
1. Power switch
2. RF diversity indicator
3. AF indicator
4. 7-segment channel display
5. Channel scan button
6. IrDA synchronizing area
7. IrDA synchronizing button
8. Volume control
9. RF diversity indicator
10. AF indicator
11. 7-segment channel display
12. Channel scan button
13. IrDA synchronizing area
14. IrDA synchronizing button
15. Volume control
16. Antenna B (TNC socket)
17. CH2 balanced audio output
18. CH2 squelch control. Clockwise to increase level.
19. Mix audio output
20. Mic /Line level switch of mixed audio output
21. CH1 balanced audio output
22. CH1 squelch control. Clockwise to increase level.
23. DC input
24. Antenna A (TNC socket)
Channel scanning
In situations with heavy wireless microphone use or other wireless equipment you
may experience interference. The scan function will automatically find a cleaner
channel. To perform the scan function, the transmitter must first be switched off.
Press and hold a channel button [ channel 1:
⑤,
channel2:
○
12
] for 3 seconds and
the receiver will auto scan UPwards (
▲) or DOWNwards (▼) and stop at the next
clean one. Then you turn on the transmitter and use the sync function set the
channel accordingly.
Volume adjusting
Volume level can be adjusted by rotating the designated volume knob [ channel 1:
⑧ ,
channel2:
○
15
]. Clockwise to increase the volume and counterclockwise to
decrease the volume.
DIVERSITY
A
B
AUDIO
CHANNEL
SYNC
MAX
MIN
DIVERSITY
A
B
AUDIO
CHANNEL
SYNC
MAX
MIN
PLL DIVERSITY RECEIVER
SDR-1900
1
2
7
3
4
9
8
5
6
10 12
13
14
15
11
16
17
18
19
24
23
20
22
21
CHANNEL 1
CHANNEL 2
CHANNEL 2
