EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS
(EM2115A-9)
b. FM
The FM Audio signal is the amplified discriminator output. Nominal output is 100
mW into 600
.
NOTE:
In Slideback, the output of the Threshold Detector is heard
in the earphones.
c. BFO
The BFO circuit is turned on for aural identification of CW signals. The tone in
the earphones will decrease in frequency as the peak of the tuned input signal ap-
proaches and produce a zero-beat at the center frequency of the signal peak.
A-10.1.1 Audio Indicators
Type:
LED.
Color:
Red.
Function:
To indicate the audio output available at the front panel Phone Jack.
A-10.2 Audio Volume Control
Type:
Cermet single turn, 280
rotation, 100 k
.
Function:
Used to adjust the audio output level to the front panel Phone Jack.
A-11.0 Local Switch
Type:
Momentary pushbutton switch.
Indicator:
None.
Function:
To select the Local mode of receiver operation. A separate Remote in-
dicator (LED) is activated when the Remote mode of operation is selected. The
Remote Mode can only be selected thru a GPIB BUS Command.
NOTE:
The receiver can be locked into the Remote mode when the
computer issues a Local Lockout command through the
GPIB Interface Bus. Under these conditions, pushing the
Local Switch will have no effect. The computer must issue a
command to return the receiver to the Local mode of oper-
ation.
A-11.1 Remote Indicators
Type:
LED.
Summary of Contents for EM-2115
Page 1: ...INSTRUCTION MANUAL INTERFERENCE ANALYZER MODEL EM 2115 EMC 30...
Page 68: ...EM 2115 3 0 PERFORMANCE CHECK EM2115S3 13...
Page 104: ...EM 2115 4 0 SERVICE MAINTENANCE CALIBRATION EM2115S4 36...
Page 106: ...EM 2115 4 0 SERVICE MAINTENANCE CALIBRATION EM2115S4 38...
Page 108: ...EM 2115 4 0 SERVICE MAINTENANCE CALIBRATION EM2115S4 40...
Page 110: ...EM 2115 4 0 SERVICE MAINTENANCE CALIBRATION EM2115S4 42...
Page 112: ...EM 2115 4 0 SERVICE MAINTENANCE CALIBRATION EM2115S4 44...
