Aeroflex 3500A - Page 211

Subject to Export Control, see Cover Page for details. 4-41
4-8. NXDN OPTION (35000400)
The NXDN Option (35000400) NXDN test protocols to the testing compatibilities of the
3500 / 3500A.
The NXDN Option provides users with the ability to test digital two-way radio systems.
4-8-1. NXDN MINI METER
The NXDN Mini Meter can be added to the Duplex and Transmitter Test Screens.
DUPLEX TEST SETUP
Modu la tion Met er 0 DCS Deco de 0
RSSI M ete r 0 Aud io Le vel 0
RF Error Meter 0 Digital Receive 9
RF Power Meter 0
SINAD Meter 0
Distortion Meter 0
AF Counter 0
DTMF Decode 0
Edit Re tur n
1
4
7
2
5
8
3
6
9
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Edit Re tur n Hol
d
Se tup PTT on
DUPLEX TEST
Generator Off Receiver More
MH
z: 40 .000 00 0 MH z: 40. 00000 0
Port: T/R Port: T/R
Level: -70 dBm Mo d: NXDN
Ext A ttn dB: 0
Modulator NXDN Digita l
Pattern: 1 031
RAN: 1
Rate: 4800
Vo lu me: 1 00 NXD N De mod Mo re
Sq uelch: -50 dBm S ig Pwr - 1.8
Sp eake r: Au dio In Freq Err -4.3
AudOut : Audio In FSK Err 1.0
Save Recall Sym Dev 1056
41 20 29
To access the NXDN Mini Meter fields on the Duplex and Transmitter Test Screens:
● Press the  LEFT Key or  RIGHT Key to move the on-screen cursor to the NXDN Demod
frame.
● Press the  UP Key or  DOWN Key to move the on-screen cursor to the More field and
press the F1 “Enter” Key to display additional NXDN fields.
● Press the  UP Key or  DOWN Key to move the on-screen cursor from one field to another.
To access the Digital Receive Screen for NXDN field settings:
● Press the  LEFT Key or  RIGHT Key to move the on-screen cursor to the NXDN Demod
frame.
● Press the F1 “Zoom” Key to display the Digital Receive Screen.
The NXDN Test Pattern, RAN and Rate fields can also be accessed in the modulation frame on the
Duplex and Transmitter Test Screens:
Edit Re tur n Hold Se tup PTT on
DUPLEX TEST
Ge ner ato r Off R eceiver Mo re
MH
z: 40 .000 00 0 MH z: 40. 000 00 0
Port: T/R Port: T/R
Level: -70 d Bm Mod: NXDN
Ext A ttn dB: 0
Modulator NXDN Digital
Pattern: 1031
RAN: 1
Rate: 4800
Vo lu me: 1 00 NXD N De mod Mo re
Sq uelch: -50 dBm S i g Pwr -1.8
Sp eake r: Au dio In Freq Err -4.3
Au dOut: Audio In FSK Err 1.0
Sa ve Recall S ym Dev 10 56
41 20 29