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Garmin GNC 255 GNC255A/255B Pilot's Guide - Page 48

Software Version, Serial Number

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5. Wait until the updating process is complete and then remove the memory device and cable. The unit will reset automatically once the database is updated. 6. Verify the correct frequency database is loaded after power-up. 3.5.6 Software Version The software versions of the GNC 255 unit are displayed. This information is useful when contacting Customer Support. 1. Press FUNC to access the Functions. Turn the LARGE knob to select the SYS Function. Turn the SMALL knob to view the Software Version function. Then, press the ENT key. Display Software Version Com Software Version Nav Software Version Figure 3-39 Software Versions Display 2. Press the FUNC key to return to the main menu. 3.5.7 Serial Number The serial number of the GNC 255 unit is displayed. This information is useful when contacting Customer Support. 1. Press FUNC to access the Functions. Turn the LARGE knob to select the SYS Function. Turn the SMALL knob to view the Serial Number function. Then, press ENT. Figure 3-40 Serial Number Display Unit Serial Number ID Is Used With The flyGarmin Services 2. Press the FUNC key to return to the main menu. 3-22 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A

Section	Page
Product Registration and Support	7
1 Getting Started	13
1.1 Product Description	13
1.2 Pilot Controls	14
1.2.1 Power/Com Volume/Squelch Knob	14
1.2.2 Nav Volume/ID Knob	14
1.2.3 Tuning LARGE/SMALL Concentric (Cursor) Knobs	15
1.2.4 FLIP/FLOP Key	15
1.2.5 C/N (Com/Nav) Key	15
1.2.6 OBS Key	15
1.2.7 T/F (To/From) Key	15
1.2.8 CLR (Clear) Key	15
1.2.9 ENT (Enter) Key	15
1.2.10 FUNC (Function) Key	16
1.2.11 MON (Monitor) Key	16
1.3 USB Port	16
2 Basic Operation	17
2.1 Power On	17
2.2 Com Radio	17
2.2.1 Selecting a Com Frequency	17
2.2.2 Monitoring the Standby Com Channel	18
2.2.3 Saving a Com Channel	18
2.2.4 Com Database Look-Up	20
2.2.5 Frequency Database Reverse Look-Up	20
2.2.6 Emergency Channel	21
2.2.7 Stuck Mic	21
2.2.8 Remote Frequency Selection Control	21
2.3 Nav Radio	22
2.3.1 Selecting a Nav Frequency	22
2.3.2 Saving a Nav Channel	22
2.3.3 Listening to the Nav Audio Channel	23
2.4 OBS Mode	24
2.5 Distance/Speed/Time (DST) Display	25
3 Functions	27
3.1 Functions Description	27
3.2 Com Frequencies	28
3.2.1 Recent Com Frequencies	28
3.2.2 Com User Frequencies	29
3.2.2.1 Viewing the Com User Frequency	29
3.2.2.2 Deleting the Com User Frequency	29
3.2.2.3 Editing a Com User Frequency	30
3.2.3 Com Database Frequencies	31
3.2.4 Com Nearest Airports (APT)	32
3.2.5 Com Nearest Area Control Center (ACC) Frequencies	33
3.2.6 Com Nearest Flight Service Station (FSS) Frequencies	34
3.2.7 Com Nearest Weather (WX) Frequencies	35
3.3 Nav Frequencies	36
3.3.1 Recent Nav Frequencies	36
3.3.2 Nav User Frequencies	37
3.3.2.1 Viewing the Nav User Frequency	37
3.3.2.2 Deleting the Nav User Frequency	37
3.3.2.3 Editing a Nav User Frequency	38
3.3.3 Nav Database Frequencies	39
3.3.4 Nav Nearest VOR	40
3.4 ICS Configuration	41
3.4.1 Adjust Intercom	41
3.4.2 Aux Audio	42
3.4.3 Intercom On/Off	43
3.4.4 Speaker On/Off	43
3.5 System Configuration	44
3.5.1 Com Spacing	44
3.5.2 Display Brightness	45
3.5.3 Display Contrast	46
3.5.4 Database Info	46
3.5.5 Load Database	47
3.5.6 Software Version	48
3.5.7 Serial Number	48
3.6 Timers	49
3.6.1 Setting Up the Count Down Timer	49
3.6.2 Setting Up the Count Up Timer	50
3.6.3 Viewing Timers in the Com Display	50
4 Appendix	53
4.1 Troubleshooting	53
4.2 Updating the Frequency Database	55
4.2.1 Downloading the Frequency Database	55
4.2.2 Updating the GNC 255 Frequency Database	55
4.3 Messages	56