HP 8901B

Model 8901B Operation
COMMENTS
Error 01
With the 1.5 MHz IF, the IF frequency must be 1.5 MHz f50 Wz.
With the 455 Wz IF, the IF frequency must be 455 kHz f2.5 kHz (f5 Wz in Timed RF level).
Refer
to RF Frequency king. Error 01 disables MODULATION OUTPUT/AUDIO INPUT.
Error 02
Refer to RF Input Attenuation and Gain for nominal input levels. Error 02 disables MODULATION
OUTPUT/AUDIO INPUT.
Error 03
Refer to RF Input Attenuation and Gain for nominal input levels. Error 03 disables MODULATION
OUTPUT/AUDIO INPUT.
Error 04
Error 04 designates either an improperly set audio range, or an attempt to measure modulation levels
greater than those specified. Refer
to Audio Range.
Error 05
Error 05 often occurs when FM or RM measurements are attempted on low-level signals with high AM
depth (greater than 90%). Error 05 disables MODULATION OUTPUT/AUDIO INPUT.
Error 06
Maximum allowable input level is 7 Vrms (1 W peak).
Error 07
If displayed during modulation measurements, increase audio range. If displayed during level measure-
ments, increase RF input attenuation or increase
RF power range.
Error 08
If the connection from CALIBRATION AM/FM OUTPUT to RF INPUT is intact, this error may
indicate calibrator malfunction.
Error 09
Error 09 display times out. If the option is installed, Error 09 displayed may indicate an option
malfunction.
Error 10
Error 10 turns off MODULATION OUTPUT/AUDIO INPUT.
Error 11
In dB RATIO, Error 11 is displayed when measurement result is 0 or negative. (The argument of the
log function must be greater than
0.)
rev. 15 JUL.87
Error Message Summary 3-249