Specifications

MDS 05-3438A01, Rev. E MDS 4790/9790 Series Installation and Operation Guide I-1
A
Access Level screen 64
Accessories 5
ACTIVE LED 27
Active Radio Status screen 73
ALARM command (display current alarm status in
hexadecimal format). See also STAT command 35
ALARM LED 27
Alarm Masks screen 71
Alarms
classify events as major (AMASK command) 37
classify events as minor (NMASK command) 45
connecting optional circuits 23
display hexadecimal codes (LCD screen) 71
display status (STAT command). See also ALARM
command 52
event codes 53
hexadecimal values for major alarm conditions, table 36
major, defined 79
minor, defined 79
relay connections, illustrated 23
set/display Pin 25 alarm output (ASENSE command) 38
summarize in hexadecimal format (ALARM command) 35
AMASK command (classify alarm events as major). See also
NMASK command 37
Antenna switch module
removing or re-installing 89
removing, illustrated 90
Antennas
height vs. theoretical radio horizon, illustrated 97
selection 8
ASENSE command (set/display Pin 25 alarm output) 38
Assemblies, replacing 82
Audio
connector, illustrated 21
connector, installation 21
enable/disable receive attenuator (LCD screen) 71
enable/disable transmit boost (LCD screen) 71
enable/disable transmit boost (TXGAIN command) 55
set/display receive level (LCD screen) 71
set/display receive level (RXLEVEL command) 49
set/display transmit level (LCD screen) 70
set/display transmit level (TXLEVEL command) 55
B
Backlight Intensity screen 72
Backup battery
battery on/off switch 15
installation & removal 83
BAUD command (set/display communication attributes for
DATA INTERFACE port) 38
Baud rate
set/display baud rate/format (Baud Rate/Format screen) 66
setting for RJ-11 DIAG port (DLINK command) 41, 80
Baud Rate/Format screen 66
Bench test setup 79
illustrated 80
BUFF command (set/display received data handling mode) 39
C
Cables
coax 9, 17
DB-9 to DB-9 for PC connection 28
DB-9 to DB-9, illustrated 29
diagnostic and control interface, accessory 5
extension 13
feedline installation 17
feedline loss chart, table 10
feedline selection 9
front panel, disconnecting 12, 84
null-modem, connecting same-site radios for
diagnostics 81
RJ-11 to DB-9 adapter 81
RJ-11 to DB-9 adapter, illustrated 82
Cautions
disconnect primary power before removing transceiver
board or power supply 82, 89
verify power source matches power supply 83
CKEY command (enable/disable continuous keying) 40
Clear Logs screen 75
Clear-to-Send Delay screen 66
Clear-to-send timer
set/display value (CTS command) 40
set/display value (LCD screen) 66
Commands
ALARM (display current alarm status in hexadecimal
format). See also STAT command 35
AMASK (classify alarm events as major). See also
NMASK command 37
ASENSE (set/display Pin 25 alarm output) 38
BAUD (set/display communication attributes for DATA
INTERFACE port) 38
BUFF (set/display received data handling mode) 39
CKEY (enable/disable continuous keying) 40
CTS (set/display clear-to-send timer) 40
DATAKEY (set/display key-on-data mode) 40
DATE (set/display date) 41
diagnostics, PC 33
DKEY (deactivate transmitter). See also KEY command 41
DLINK (enable/disable network-wide diagnostics) 41
DMGAP (set time to wait between characters) 42
DTYPE (set radio to root or node for diagnostics) 42
HREV (display hardware revision level) 43
INIT (reset customer-programmable settings) 43
KEY (activate transmitter). See also DKEY command 44
LOG (display/clear history of system events) 44
MODE (display whether master or remote) 45
MODEL (display radio model number) 45
MODEM (set signal type and modulation mode) 45
NMASK (classify minor alarm events). See also AMASK
command 45
INDEX