2.2 Rear Panel Input/Output Signals
Figure 2.1 shows the input and output connectors on the rear panel.
1
5
2
3
4
6
7
8
9
AC
GND
J8
J2
EXT 10MHZ
IINPUT
RF INPUT
10MHZ REF
OUTPUT
INT
EXT
AUTO
S1
J101
J11
ALARM
J102 - RF OUTPUT
Super SMA (female) 50
Ω
. 20.2 to 21.2 GHz,
-50 dBm max output signal.
AC INPUT
100-240 ±10% VAC,
47-60 HZ
Uses 2 amp Slow Blo,
5mm fuse
S1 - 10MHZ SWITCH
3-position switch. INT selects internal 10MHz ref.
AUTO selects internal 10MHz ref, unless a
+3dBm ±3dB 10MHz signal is inserted on J2.
EXT selects external 10MHz ref from J2.
J2 - EXT 10MHZ INPUT
BNC (female) 50
Ω
/75
Ω
. Insert external
10MHz reference here (3 dBm ± 3 dB).
J101 - RF INPUT
2.92 mm (female) 50
Ω
, 30.0 to
31.0 GHz, -30.0 to 31.0 GHz to
dBm max input signal. .
J11 - ALARM
DB9 (female) connector.
See Table 2.1.
J8 - 10MHZ REF OUTPUT
BNC (female) 50
Ω
/75
Ω
.
Outputs the currently selected
10MHz ref signal (3 dBm ±3 dB).
RF OUT
J102
FIGURE 2.1 2116-31T21 Rear Panel I/O
ʼ
s
TABLE 2.1 J1
11
TABLE 2.1 J11 Pinouts (DB9)
Pin
Function
1
Not Used
2
Not Used
3
Not Used
4
Not Used
5
GND
6
Alarm Relay: Common
7
Alarm Relay: Normally Open
8
Not Used
9
Alarm Relay: Normally Closed
TABLE 2.2 C
Connector
2.2
Connector
RF Input
RF Output
STD
2.92 mm
Super SMA, 50
Ω
2.3 Front Panel Indicators
Figure 2.2 shows the front panel indicators.
DS2 - ALARM LED
Lights RED when PLL comes
out of lock.
DS1 - POWER LED A
Lights GREEN when DC voltage is
present from AC power supply.
DS3 - EXT 10MHZ LED
Lights YELLOW when external
10MHz reference is active.
POWER
EXT
10MHZ ALARM
FIGURE 2.2 2116-31T21 Front Panel Controls and Indicators
2116-31T21 Manual, Rev. 0
Page 6
12/09/19
