Remote control unit – ETS-Lindgren 4630 Refrad Reference Radiator (Archived) User Manual
Page 7

MODEL 4630 REFRAD REFERENCE RADIATOR
Introduction
© EMC TEST SYSTEMS, L.P. – MARCH 2002
3
REV F – PN 399214
battery nears full charge, the charge will begin to operate in a 
TOP-OFF/TRICKLE mode. This is indicated by the green LED. 
 
The power supply uses a green LED to indicate that power is 
applied. In case of a fault condition, the green LED with be 
extinguished. 
 
NOTE: The REFRAD comb generator is not designed to operate 
using the battery charger as a power source. 
 
REMOTE CONTROL UNIT
1. Connect the remote control unit to the GPIB-bus. 
2. Connect the 9 V DC plug-in power supply. 
Note: Use only the power supply included with the unit. 
3. With the comb generator set to “REMOTE” mode, the front 
panel knob on the remote control unit may be used to select 
any comb spectrum manually. The comb spectrum may also be 
selected by a remote computer connected to the GPIB (IEEE-
488) bus with the control knobs on both the comb generator 
and remote control unit set to “REMOTE”. Note settings in to 
illustration below. 
FIGURE 3. REFRAD Remote Control Unit Front Panel.
MODEL 4630
REFRAD REMOTE 
CONTROL UNIT
REMOTE
STAND BY
0.01 MHz
1.00 MHz
5.00 MHz
POWER
ON
OFF
Rotary switch 
(for manual selection of a comb spectrum,
mode, or
mode)
REMOTE
STAND BY
LEDs 
(for selection indication)
ON / OFF switch
Archived 3/18/10
