Figure 4-3: Two-Line Display; Figure 4-4: Four-Line Display (Ht1550•Xls); Table 4-1: Test Environments (Side Button 1) - Motorola HT750 - UHF/VHF/Low Band - Radio Service Manual

4-4
Number of
Side
Button 1
Presses
Initial (No but-
ton presses
required)
1
2
3
4
5
6
7
Annunciators

Figure 4-3: Two-Line Display

Annunciators
Test Mode
Information,
Line 2
Figure 4-4: Four-Line Display (HT1550

Table 4-1: Test Environments (Side Button 1)

No. of Display
Beeps Shows
0 CSQ
1 TPL
2 DPL
3 DTMF
5 Open
9 HSS
11 CMP
12 LLE
XLS)
•
Description
Carrier RX: if carrier detected
Squelch TX: mic audio
Tone Private- RX: unsquelch if carrier and tone
Line (192.8Hz) detected
TX: mic audio + tone (192.8Hz)
Digital Private- RX: unsquelch if carrier and digi-
Line tal code (131) detected
TX: mic audio + digital code (131)
Dual-Tone RX: unsquelch if carrier detected
Multiple TX: selected DTMF tone pair
Frequency
Unsquelch RX: constant unsquelch
TX: mic audio
MDC1200 RX: unsquelch if carrier detected
TX: 1500Hz tone
Compander RX: if carrier detected
TX: mic audio
Low-Level RX: if detected
Expand TX: mic audio
Transceiver Performance Testing
Function