1
Safegua
rds
2
Terms and
Warranty
3
Principl
e o
f
Operati
on
4
Ins
talla
tion
5
Operati
on
6
C
ont
rol Syst
em
7
RF Componen
ts
8
Power
Supp
ly
9
Maintenan
ce
10
Troubleshoo
ting
Remote Control (via DB25)
An additional option for remote control of the power amplifier/transmitter is
through the DB25 connector found on the back panel of the power
amplifier/transmitter, as illustrated below:
The overall functions of each pin on the Remote Port are indicated in the
following DB25 pinout:
Pin Number
Description
1 Ground
2
Forward power sample
1
3 Reflected
power
sample
1
4 Carrier
off
2
5 Carrier
on
2
6
3
Increase carrier level 1%, if AGC on
2
7
3
Decrease carrier level 1%, if AGC on
2
8
Do not use
9 Reset
2
10
Do not use
11
High temperature flag
2
12
High VSWR flag
2
13
Amplifier overdriven flag
2
14
Do not use
15
+3.3Vdc (for testing only, do not load)
16 Ground
17 Ground
18-25
Do not use
Notes: 1. Analog output with voltage ranging from 0 to 3.3Vdc.
2. Open collector configuration on RF 1.04 and later. On RF 1.04 and
later, ground to activate input control on inputs; ground indicates fault
occurrence on fault outputs. On RF 1.03 and earlier, the inputs are TTL
digital inputs, active on rising edge and the outputs are active high.
3. If AGC off, these pins turn on AGC to the current FWD level, +/- 1%.
In addition to the DB25 parallel data connector, the user may chose to remotely
control the RF amplifier/transmitter via an optional Ethernet web server or
through an optional Simple Network Managed Protocol (SNMP) interface,
described later in this section.
Attach a male DB25 cable
to this female connector
Summary of Contents for TXF-1000
Page 1: ...FM TRANSMITTER...
